8
I am still not sure why you are editing the XOOPS core. You can set the module as your home page without touching the core.
Frankly, I am not sure anyone here is going to be able to answer your question as it seems you have done something unusual, which may have worked at one time... Although, I am still not sure how or why it ever worked.
Why dont you try uploading a fresh copy of xoops, and pointing it at your db. Make sure you upload the same vers.