10
I may have a clue !!!!!!
Is anyone of you using the uservisit module???
I have been juggling with this problem before and thought it was a wiwimod versus xcgallery problem, after a while stopping to show pages and the galleries.
BUT, yesterday i had it again with my new site, which had been working fine like this for over 2 months. More modules stopped displaying and instead showed white pages, this made me figure..... I remembered it happening specifically after the uservisit module started functioning, because it wasn't before and i was resolving that issue. It has something to do with the footer.php of uservisit install, because when i replaced it with the original footer.php from xoops, EVERYTHING worked again as if nothing happened. (except for uservisit of course...)
Hope this helps. Verified it on two websites with the same issue