Since I've upgraded the plugin to the latest version I am unable to create thumbnails. Re-creating thumbnails also doesn't work.
I know that there were more topics about it, but searching the forums for thumbnails gives no response anymore :S
Browsing through the NextGen threads did find one (no, didn't browse all pages, do have other things to do) but his problem was fixed with adding a width to the thumbnail settings (I have always had width&height configured).
Btw, it's not just one website. This problem occurs in my personal blog and my portfolio website.
Any news on this problem?