8
Have you made a back up, if not then it maybe worth doing that now in case any more disappear.
I remember seeing something posted on the modules website which you would be able to search.
It may also be worth reporting this issue with the developer, unfortunately XOOPS will not allow me to post links to the modules website or where to get help from the developer, Please check inside your module folder there should be a 'readme' with details in for where to find support.
Sorry I can't help further.