I know this is an old topic but I went to the index.php file to change the '&thumb=62c&full=782p' on line 14 to '&thumb=132c&full=782p' . This should change the thumbnail size to 132 x 140 as indicated by the admin/common/properties.php... correct? I also "updated" my watermark, and it is still 62 x 62.
specialevents.html