Linux Mint Forums

Hi. I'm trying to change my Mint theme, but there's a problem. There are many themes in the usr/share/themes folder, but only the first one is shown into the list of available themes. Here are some screenshots.
How can I see all of them in the list? Thank you!

Getting similar issues with Ubuntu. My thread is here http://forums.linuxmint.com/viewtopic.p ... 8&t=128795