233637
Ok before you go any further, please remove the 2.0.7 version from your website and return to the previous version (ie delete 2.0.7, copy the previous version and perform an update in XOOPS module admin).
Using the 2.0.7 version right now is not helping matters here, as the database tables are completely different.
Once you have done the above, de-activate all other modules and let me know what php debugging says.
You said that you have only 4 documents written, may I suggest that because this number is really small that you could infact un-install WF-Sections totally and install 2.0.7 fresh and see if your problems disappear (You can always revert to the database backs later if needed).