Thread:Project:Support desk/Image Thumbnail : Error creating thumbnail: '"/convert"' is not recognized as an internal or external command, operable program or batch file. Error code: 1/reply

It's strange, it's like it doesn't recognize the setting Manual:$wgImageMagickConvertCommand and it's using the default (because it doesn't say "convert.exe" in the error message).

Check that you haven't mispelled the variable name and that you're editing the correct LocalSettings.php