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Please test the theme on XOOPS 2.5.6.
If it works, then you'll need to upgrade your site from 2.4.5 to 2.5.6
If I recall correctly, there were some issues in old versions of XOOPS with conflicting jQuery installations, if you had more than one on your system, but I don't remember the details.
It's easier to upgrade to XOOPS 2.5.6, especially that many things have been improved, incl. some security aspects...