Thread:Project:Support desk/Warning: imagepng() function.imagepng : open basedir restriction in effect./reply

Apparently, your host has set up a temp directory for PHP on D:\Temp\, but they have set up open_basedir restriction in php.ini to, which looks odd, because it should be   (note the separator between both paths), so it seems to not allow accessing any other path outside of the wiki installation directory.

You can contact your host about that, or manually set $wgTmpDirectory to a path within your MediaWiki installation ( for example)