Thread:Project:Support desk/Error creating thumbnail: Unable to save thumbnail to destination

Hello, I'm running Mediawiki 1.19.0 on IIS7 (win server 2008, php 5.4.3 and mysql 5.5.24) and it doesn't generate any thumbnail. I tried ImageMagick 6.6.7 and also GD version ($wgThumbnailScriptPath = "{$wgScriptPath}/thumb.php";) but I'm still getting this error. Full image works, but not thumbnail. There is granted all permissions to "images" folder (as uploading files works). Thank you.