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Missing Plug-ins

Apr 29, 2012, 03:26
Post: #1
Missing Plug-ins
I'm receiving this error message when I'm attempting to
make the background transparent.

Plug-In "color-to-alpha.exe"
(C:\Program Files\GIMP-2.0\lib\gimp\2.0\plug-ins\color-to-alpha.exe)
tried reading from drawable 156 which was removed from the image (killing)

Does anyone have a link to where I can download all required plug-ins for GIMP 2.6?

Will upgrading to 2.7 automatcally include a complete set of plug-ins?

Is it advisable to uninstall 2.6 then do a fresh install of 2.7?

Thanks.
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Apr 29, 2012, 09:10 (This post was last modified: Apr 29, 2012 09:12 by ofnuts.)
Post: #2
RE: Missing Plug-ins
The message isn't about a missing plugin but about a missing drawable (ie , layer or channel). Your color-to-alpha plugin is present. There is no "predefined" list of plugins in Gimp, the mere fact that it lists C:\Program Files\GIMP-2.0\lib\gimp\2.0\plug-ins\color-to-alpha.exe is proof that it found it in one of the plugins directories and that it was executed successfully at least once for registration.

The only way I can think of to produce this is to start color-to-alpha, and, while the color-to-alpha dialog is up, erase the active layer. But this actually produces a different message.

Did you try with another picture?

Can you post your problem picture?

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Apr 29, 2012, 14:52
Post: #3
RE: Missing Plug-ins
The message isn't about a missing plugin but about a missing drawable (ie , layer or channel). Your color-to-alpha plugin is present. There is no "predefined" list of plugins in Gimp, the mere fact that it lists C:\Program Files\GIMP-2.0\lib\gimp\2.0\plug-ins\color-to-alpha.exe is proof that it found it in one of the plugins directories and that it was executed successfully at least once for registration.

The only way I can think of to produce this is to start color-to-alpha, and, while the color-to-alpha dialog is up, erase the active layer. But this actually produces a different message.

Did you try with another picture?

Can you post your problem picture?
[/quote]

Here's my picture picture after attempting to create a transparent background. The original was a jpg file from google images.

I can try with another picture that's simpler like a green dot with a white background. Thanks.
    [quote='ofnuts' pid='10522' dateline='1335690638']
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Apr 29, 2012, 15:20 (This post was last modified: Apr 29, 2012 15:21 by ofnuts.)
Post: #4
RE: Missing Plug-ins
Uh, I meant the XCF. But if the XCF is just loading the jpg... come to think of it, did you add an alpha channel to the layer from the JPG?

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Apr 29, 2012, 15:41
Post: #5
RE: Missing Plug-ins
(Apr 29, 2012 15:20)ofnuts Wrote:  Uh, I meant the XCF. But if the XCF is just loading the jpg... come to think of it, did you add an alpha channel to the layer from the JPG?

I went to use the GIMP user manual and received this error message. And I'm looking to see how to prevent the anti-virus software from preventing me access. Isn't that what this error message says?

Execution error for 'User Manual Web Site':
Error: Procedure execution of plug-in-web-browser failed: Failed to open 'http://docs.gimp.org': The operating system denied access to the specified file.
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Apr 29, 2012, 17:18 (This post was last modified: Apr 29, 2012 17:19 by words44.)
Post: #6
RE: Missing Plug-ins
I uninstalled GIMP and reinstalled both the program and the help user manual and now I am receiving the following error. Anyone know why I'm getting this error when I select the help menu, F1? I installed the latest version of GIMP 2.6.12.

Parse error in 'http://docs.gimp.org/2.6/en/gimp-help.xml':
GET request failed: WinHttp error: CANNOT_CONNECT

Thanks,
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Apr 29, 2012, 17:22 (This post was last modified: Apr 29, 2012 17:24 by words44.)
Post: #7
RE: Missing Plug-ins
   

Here's a red dot that I made the background transparent.
The background was originally white.

I'm still working on getting the user manual to be accessible on my
computer which I believe is a virus program problem.
I'm using antiVir and Outpost Security Suite both free versions.
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Apr 29, 2012, 17:36 (This post was last modified: Apr 29, 2012 17:39 by ofnuts.)
Post: #8
RE: Missing Plug-ins
(Apr 29, 2012 17:22)words44 Wrote:  Here's a red dot that I made the background transparent.
The background was originally white.
So I assume the original problem is solved?

On a side note, if you wonder why you still have this whitish rim around the red circle, read this series of posts.

(Apr 29, 2012 17:22)words44 Wrote:  I'm still working on getting the user manual to be accessible on my
computer which I believe is a virus program problem.
I'm using antiVir and Outpost Security Suite both free versions.
There are four ways to use the Gimp help. The help can be installed locally or read off the gimp.org servers, and it can use either Gimp built-in browser or your usual browser.

Check "Edit/Preferences" -> "Help system"

Since you seem to be using the "web" version you may have to enable specific executables in your paranoid firewall.

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Apr 29, 2012, 19:04
Post: #9
RE: Missing Plug-ins
Thanks Ofnuts. My original problem is solved. I was able to make the background transparent.

On using the user manual. I turned my security software off and received this message:
Anyone have an idea how to solve this, chime in. thanks.

Execution error for 'User Manual Web Site':
Error: Procedure execution of plug-in-web-browser failed: Failed to open 'http://docs.gimp.org': The operating system denied access to the specified file.
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Apr 29, 2012, 20:18
Post: #10
RE: Missing Plug-ins
Download the help and install it for local use...

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Apr 29, 2012, 22:02
Post: #11
RE: Missing Plug-ins
(Apr 29, 2012 20:18)ofnuts Wrote:  Download the help and install it for local use...

When I edit Preferences to access the user manual on my computer the following information gets displayed in a Notepad file after I select Help =>User Manual =>Preparing Your Images for the Web (or any topic listed). There has got to be a setting somewhere to tell GIMP to use a certain browser or what program to use. My OS is Windows XP.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>2. Preparing your Images for the Web</title>
<link rel="stylesheet" href="gimp-help-plain.css" type="text/css" />
<link rel="stylesheet" href="gimp-help-screen.css" type="text/css" />
<link rel="stylesheet" href="gimp-help-custom.css" type="text/css" />
<link rel="alternate stylesheet" href="gimp22.css" type="text/css" title="gimp22" />
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
<link rel="start" href="index.html" title="GNU Image Manipulation Program" />
<link rel="up" href="gimp-images-out.html" title="Chapter 6. Getting Images out of GIMP" />
<link rel="prev" href="gimp-images-out.html" title="Chapter 6. Getting Images out of GIMP" />
<link rel="next" href="gimp-using-web-reducing-file-size.html" title="2.2. Reducing the File Size Even More" />
</head>
<body>
<div class="navheader">
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">2. Preparing your Images for the Web</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="gimp-images-out.html"><img src="images/prev.png" alt="Prev" /></a> </td>
<th width="60%" align="center">Chapter 6. Getting Images out of GIMP</th>
<td width="20%" align="right"> <a accesskey="n" href="gimp-using-web-reducing-file-size.html"><img src="images/next.png" alt="Next" /></a></td>
</tr>
</table>
<hr />
</div>
<div class="sect1" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h2 class="title" style="clear: both"><a id="gimp-using-web"></a>2. Preparing your Images for the Web</h2>
</div>
</div>
</div>
<a id="id453672" class="indexterm"></a>
<p>
One of the most common purposes <acronym class="acronym">GIMP</acronym> is used for
is to prepare images for adding them to a web site. This means that
images should look as nice as possible while keeping the file
size as small as possible. This little step-by-step guide will tell
you how to achieve a smaller file size with minimal degradation of
image quality.
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="gimp-using-web-size-vs-quality"></a>2.1. Images with an Optimal Size/Quality Ratio</h3>
</div>
</div>
</div>
<p>
An optimal image for the web depends upon the image type and the file
format you have to use. If you want to put a photograph with a lot of
colors online, you have to use
<a class="link" href="gimp-images-out.html#file-jpeg-save" title="1.2.2. Saving as JPEG">JPEG</a>
as your primary file format. If your image contains fewer colors, that
is, if it is not a photograph, but is more a drawing you created (such
as a button or a screenshot), you would be better off using
<a class="link" href="gimp-images-out.html#file-png-load">PNG</a>
format. We will guide you through the process of doing this.
</p>
<div class="procedure">
<ol type="1">
<li>
<p>
First, open the image as usual. I have opened our Wilber as an
example image.
</p>
<div class="figure">
<a id="id443602"></a>
<p class="title">
<b>Figure 6.6. The Wilber image opened in RGBA mode</b>
</p>
<div class="figure-contents">
<div class="mediaobject">
<img src="images/using/preparing_for_web1.png" alt="The Wilber image opened in RGBA mode" />
</div>
</div>
</div>
<br class="figure-break" />
</li>
<li>
<p>
The image is now in RGB mode, with an additional
<a class="link" href="glossary.html#glossary-alpha" title="Alpha">Alpha channel</a>
(RGBA). There is usually no need to have an alpha channel for your
web image. You can remove the alpha channel by
<a class="link" href="gimp-image-flatten.html" title="6.20. Flatten Image">flattening the image</a>.
</p>
<p>
If you open a photograph, you probably won't have to remove the
alpha channel, because a photograph doesn't usually have one, so the
file is already opened in RGB mode.
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Note]" src="images/note.png" />
</td>
<th align="left">Note</th>
</tr>
<tr>
<td align="left" valign="top">
<p>
If the image has a soft transition into the transparent areas, you
cannot remove the alpha channel, since the information which would
be used for fading out will not be saved in the file. If you would
like to save an image with transparent areas which do not have a
soft transition, (similar to
<a class="link" href="gimp-images-out.html#file-gif-save" title="1.2.1. Saving as GIF">GIF</a>),
you can remove the alpha channel.
</p>
</td>
</tr>
</table>
</div>
</li>
<li>
<p>
After you have flattened the image, you are able to
<a class="link" href="gimp-file-save.html" title="2.8. Save">save the image</a>
in <a class="link" href="gimp-images-out.html#file-png-save-defaults">PNG format</a>
for your web site.
</p>
</li>
</ol>
</div>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<table border="0" summary="Note">
<tr>
<td rowspan="2" align="center" valign="top" width="25">
<img alt="[Note]" src="images/note.png" />
</td>
<th align="left">Note</th>
</tr>
<tr>
<td align="left" valign="top">
<p>
You can save your image in PNG format with the default settings, but
using maximum compression. Doing this will have no negative affects on
the quality of the picture, as it would have with
<a class="link" href="gimp-images-out.html#file-jpeg-save" title="1.2.2. Saving as JPEG">JPEG</a>
format. If your image is a photograph with lots of colors, you would
be better off saving it as jpeg. The main thing is to find the best
tradeoff between quality and compression. You can find more
information about this topic in <a class="xref" href="gimp-images-out.html#file-jpeg-save" title="1.2.2. Saving as JPEG">Section 1.2.2, “Saving as JPEG”</a>.
</p>
</td>
</tr>
</table>
</div>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="gimp-images-out.html"><img src="images/prev.png" alt="Prev" /></a> </td>
<td width="20%" align="center">
<a accesskey="u" href="gimp-images-out.html">
<img src="images/up.png" alt="Up" />
</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="gimp-using-web-reducing-file-size.html"><img src="images/next.png" alt="Next" /></a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top"><a accesskey="p" href="gimp-images-out.html">Chapter 6. Getting Images out of GIMP</a> </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">
<img src="images/home.png" alt="Home" />
</a>
</td>
<td width="40%" align="right" valign="top"> <a accesskey="n" href="gimp-using-web-reducing-file-size.html">2.2. Reducing the File Size Even More</a></td>
</tr>
</table>
</div>
</body>
</html>
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Apr 29, 2012, 22:11
Post: #12
RE: Missing Plug-ins
The browser choice is also in Edit/preferences -> Help system.

But you have to first download/install the help files independently (depending on language used).

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Apr 29, 2012, 23:09
Post: #13
RE: Missing Plug-ins
yes, I've gone to Edit =>Preferences =>Help System=>Help Browser and used each setting: Web Browser and GIMP Browser, but I still receive the error message above.
I installed the help files independently. It had its own installation file.

Still puzzled by this. It's got to be a Windows issue.
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May 1, 2012, 02:36 (This post was last modified: May 1, 2012 03:15 by words44.)
Post: #14
RE: Missing Plug-ins
Still having this problem when accessing the user manual (local copy on computer), notepad opens up displaying html code of the user manual as listed above posting.

I went into SAFE mode to see what would happen and the same action resulted. I went into SAFE mode because all security programs would be off.

When I change the setting to use the user manual online this is the error message. My Outpost Security Suite 7.1 Free is ON.

Execution error for procedure 'plug-in-web-browser':
Failed to open 'http://docs.gimp.org': The operating system denied access to the specified file.

Execution error for 'User Manual Web Site':
Error: Procedure execution of plug-in-web-browser failed: Failed to open 'http://docs.gimp.org': The operating system denied access to the specified file.




Thanks.
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May 1, 2012, 07:50
Post: #15
RE: Missing Plug-ins
I don't run Windows so I can't help much... and other people can overlook your questions due to the thread title. I suggest you start a new thread with a more appropriate title such as "Help doesn't work in Windows"

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