Thread:Project:Support desk/BitmapHandler::escapeMagickPath troubleshooting help?

We recently migrated a wiki instance from a Red Hat/apache to Windows Server 2008/IIS environment. The gentleman that did the actual migration just left the company, and I'm trying to clean up a few issues remaining frm the migration. The main one I'm encountering now is that after uploading any type of allowed file, I receive the following error message:

BitmapHandler::escapeMagickPath: unexpected colon character in path name

Backtrace:


 * 0 C:\inetpub\wwwroot\Mediawiki\includes\media\Bitmap.php(639): BitmapHandler->escapeMagickPath('C:\inetpub\wwwr...', false)
 * 1 C:\inetpub\wwwroot\Mediawiki\includes\media\Bitmap.php(350): BitmapHandler->escapeMagickInput('C:\inetpub\wwwr...', false)
 * 2 C:\inetpub\wwwroot\Mediawiki\includes\media\Bitmap.php(200): BitmapHandler->transformImageMagick(Object(LocalFile), Array)
 * 3 C:\inetpub\wwwroot\Mediawiki\includes\filerepo\file\File.php(938): BitmapHandler->doTransform(Object(LocalFile), 'C:\inetpub\wwwr...', '/mediawiki/imag...', Array)
 * 4 C:\inetpub\wwwroot\Mediawiki\includes\ImageGallery.php(301): File->transform(Array)
 * 5 C:\inetpub\wwwroot\Mediawiki\includes\ImageQueryPage.php(58): ImageGallery->toHTML
 * 6 C:\inetpub\wwwroot\Mediawiki\includes\QueryPage.php(553): ImageQueryPage->outputResults(Object(OutputPage), Object(SkinVector), Object(DatabaseMysql), Object(ResultWrapper), 24, 0)
 * 7 C:\inetpub\wwwroot\Mediawiki\includes\SpecialPage.php(611): QueryPage->execute(NULL)
 * 8 C:\inetpub\wwwroot\Mediawiki\includes\SpecialPageFactory.php(494): SpecialPage->run(NULL)
 * 9 C:\inetpub\wwwroot\Mediawiki\includes\Wiki.php(290): SpecialPageFactory::executePath(Object(Title), Object(RequestContext))
 * 1) 10 C:\inetpub\wwwroot\Mediawiki\includes\Wiki.php(536): MediaWiki->performRequest
 * 2) 11 C:\inetpub\wwwroot\Mediawiki\includes\Wiki.php(446): MediaWiki->main
 * 3) 12 C:\inetpub\wwwroot\Mediawiki\index.php(59): MediaWiki->run
 * 4) 13 {main}

I also receive this error when attempting to load the "Unused Files" special page. Note, any files uploaded *are* uploaded and available for use on pages, and do display properly on any pages where they are referenced.

Does anyone have any suggestions on how to troubleshoot this? I've done some searching online and haven't found anything particularly useful so far. Thanks!