2
First of all, may I remind you that all the versions prior till XOOPS 2.0.5.2 has an security flaw (xoops 2.0.5.2 hasn't). So you might want to upgrade.
Well, I do not know what your problem is but I searched on your topic, the following topics might help you:
https://xoops.org/modules/newbb/viewtopic.php?topic_id=15036&forum=21
https://xoops.org/modules/newbb/viewtopic.php?topic_id=16593&forum=20
https://xoops.org/modules/newbb/viewtopic.php?topic_id=15133&forum=7
I hope this all helps. Goodluck with it.