I'm still having the issue of the ofx files showing as Invalid when I try to import them into Microsoft Small Business Accounting 2009 however, they work fine with Microsoft Money Plus.
I have some programming background and would be more then willing to help out here if I can. Feel free to "task" me. :)
I realize these are both old sunsetted products but, I still use both of them and they won't import any Quicken files and the banks quit supporting the native formats and imports.