I tried to upgrade to the latest version but the results are worse, now I'm just getting a blank page. However, the admin console does work. I've found this in the debug log, was wondering if might sound familiar:
USER ERROR: Invalid album instantiation: Gallery object does not exist. in /home/xxx/xxx.com/zenphoto/zp-core/class-album.php on line 1221
trigger_error called from Album->_albumCheck (class-album.php [1221])
from Album->__construct (class-album.php [1192])
from UnpublishEmptyAlbums (unpublish_empty_albums.php [28])
from call_user_func_array (unknown)
from zp_apply_filter (functions-filter.php [149])
from include (password.php [17])
from include (index.php [130])
from index.php [28]Update: I just found a plugin called unpublish_empty_albums in my plugins directory. Removing it and now things work. Now I just have to figure out how to get back to my original theme and anything else I had previously...