[Plugin: NextGEN Gallery] No thumbs – protection correct

Running ‘latest’ (updated yesterday), default settings, (under cpanel…), protections on ‘thumbnails’ directory is correct.

Upload a new gallery, all files are brought in correctly (I think) and images can be viewed but there are no thumbnails.

Go back to gallery, select all images, bulk action ‘Create New Thumbnails, ‘apply’ – get the popup asking about width/height, and click on OK. get the %age window, gets to 100, then goes away, but need to click to make the window go away after its complete.

No thumbnails exist.
Protection on upper directory is 777 (gallery was created correctly), and proection on thumbs is also 777 – but its empty.

I expect this to fail but I’ll put the error code here:
1) view the gallery from admin screen
2) Select a file
3) Select ‘edit thumbnail’

The resulting popup shows:
– ‘division by zero’ errors from the gd.thumbnail.inc.php lines 282, 295
– invalid image dimension on lib/gd.thumbnail.inc.php line 428
– ‘division by zero’ admin/edit-thumbnail.php line 42

Again, there is no thumbnail so the errors are ‘expected’ but perhaps a check could be added before it gets this far.

Thanks for any help on creating these thumbnails.