Thanks, but as far as I can see, Phoca Gallery has it's own mechanism for thumbnails, and besides, this is not the only problem.
Anyone?
UPD: Just to clarify:
Images added in the control panel, but no thumbs
No thumbs here either,
and when clicked (regardless of method I use, e.g. Lightbox, Modalbox, etc.) I get an empty frame as well.
And yes, the images were successfully uploaded and are where they should be.
Really, really need to make this work!