OK, now I'm just all-out confused...
I cleaned up manifest.xsf again, but this time when I opened manifest in design mode, I tried to get into the script editor and got VBScript, like my drop-down in Options says. When I go back to my .xsn file, I still get JScript (even though the drop-down says VBScript). So what do I do here? Just save the .xsf as an .xsn and start using it instead?
*** Answered my own question. That worked fine. Now to figure out how to save to database... ***