I use WordPress 3.4.2 (Polish ver.) and have updated NextGen Gallery to ver. 1.9.8. My theme is heavily modified NoLimit. PHP ver. is 5.2.17
and MySQL ver. is 5.1.57.
The problem is I do not know, what exactly has crashed, but my six first galleries created before 31st of May 2011 can't display thumbnails on website and look like this:
The thumbnails are also invisible in Gallery Settings.
I tried both:
1) update thumbnails via Bulk Action called "Create new thumbnails" in Gallery Settings; although the process goes to 100% and there is completely no outcome
2) update single thumbnail by "Edit thumb"; I check the part of of image, click "Update", the message says "Thumbnail updated" (it even shows on the right side!), and still nothing helps.
The thumbnails do not show either in the Gallery on the website or in Gallery Settings under Thumbnail colummn. The strange thing is anything added after 20th of June, 2011 seems to be OK.