Concerning exploz, you may want to see this link on the developer's site. It may inform your decision as to whether to try to get the hack working or revert to your previous XOOPS install.
As to your issue, the exploz web site says that the hack is only set up for XOOPS 2.0.6. Could the problem be that you are running 2.0.7?
In any case, if it were me, I would overwrite all the module files with the original XOOPS module files from the version you had before you installed the hack. Then try updating... Then, if you want you can either try to reinstall the hack or wait til the hacks improve. That's what I would do. But, then again, I also had numerous experiments go bad on my home chemistry set.
But hopefully there will be someone along here shortly with a better idea...
Just trying to help...