[Theme: Blaskan] removing hard coded link in post thumbnail

Hey there, I’m using your Blaskan Theme and removed hard coded link in post thumbnail. After update to 2.3 thumbnails appear again. Why? I double-checked the code and it’s fine, like it should be (i got the infos from your github site https://github.com/persand/blaskan/commit/152bcf947b1b11ce0005842f9917af0d29db4c6e)

Please help.

http://wordpress.org/extend/themes/blaskan/