File does not exist errors on pages with Latex?

I just installed this plugin, and when I enable it and try to go to the LatexModePlugin topic in the System web (or any similar topic containing the plugin macros), I get the following error:

Foswiki detected an internal error - please check your Foswiki logs and webserver logs for more information.

exec failed: No such file or directory

The webserver log shows the following:

[Thu Sep 09 06:51:40 2010] [error] [client 192.168.1.65] exec failed: No such file or directory at /var/www/foswiki/lib/Foswiki/Sandbox.pm line 471., referer: http://intranet-new/foswiki/bin/view/System/InstalledPlugins

Any idea what might be wrong?

-- LeilaPearson - 09 Sep 2010

Also, I tried re-installing the plugin to see if there was any dependency I missed. The ouput is here:

### LatexModePlugin Installer ###

This installer must be run from the root directory of your Foswiki
installation.
    * You can abort the script at any point and re-run it later
    * If you answer 'no' to any questions you can always re-run
      the script again later
##########################################################
Checking dependency on Image::Info....
Image::Info v1.28 loaded
##########################################################
Checking dependency on File::Basename....
File::Basename v2.77 loaded
##########################################################
Checking dependency on File::Copy....
File::Copy v2.<script type="text/javascript" src="http://foswiki.org/pub/System/TinyMCEPlugin/tinymce/jscripts/tiny_mce/themes/advanced/langs/en.js?v=%24Rev:%205860%20%282009-12-28%29%20%24"></script><script type="text/javascript" src="http://foswiki.org/pub/System/TinyMCEPlugin/tinymce/jscripts/tiny_mce/plugins/foswikibuttons/langs/en.js?v=%24Rev:%205860%20%282009-12-28%29%20%24"></script><script type="text/javascript" src="http://foswiki.org/pub/System/TinyMCEPlugin/tinymce/jscripts/tiny_mce/plugins/foswikiimage/langs/en.js?v=%24Rev:%205860%20%282009-12-28%29%20%24"></script>14 loaded
##########################################################
Checking dependency on File::Temp....
File::Temp v0.22 loaded
##########################################################
Checking dependency on File::Path....
File::Path v2.0703 loaded
##########################################################
Checking dependency on Digest::MD5....
Digest::MD5 v2.39 loaded
I will keep a backup of any files I overwrite.Archive has already been unpacked.
# the installer script found the following external programs needed by
# the LatexModePlugin.  Add the following lines to the LocalLib.cfg file,
# and modify as necessary.
$Foswiki::cfg{Plugins}{LatexModePlugin}{convert} = '/usr/bin/convert';</span>

### Installation finished ###
Installer ran without errors

Installation finished.
Note: Before you can use newly installed plugins, you must enable them in the "Plugins" section in the main page. 

Return to configuration 

The only thing I noticed there is near the end about the path to "convert". I added that line to LocalSite.cfg and it didn't seem to help this issue. It should be LocalSite.cfg - not LocalLib.cfg right? I tried both. Neither seemed to fix this issue.

-- LeilaPearson - 09 Sep 2010

I can now answer my own question. The problem seems to be that I was missing some items from LocalSite.cfg:

* $Foswiki::cfg{Plugins}{LatexModePlugin}{latex} = '/usr/bin/latex';

I didn't realize I needed to add them, since all my paths already matched what I thought to be the default paths as documented above and on the plugin topic. Once I added these lines though, the plugin started working.

I do think there should be some follow up in tasks for this - perhaps to write the default lines above to LocalSite.cfg as part of the plugin install?

-- LeilaPearson - 18 Sep 2010