Look what we’ve found, a working CAB of Windows Marketplace for WM6.1! Do the guys at XDA-developers work quickly or what? Although there were reports of Marketplace not being available for WM6.1 for another month or so, it appears that won’t be a problem anymore. Simply install the CAB from XDA-developers, click on Marketplace from programs, go through the installation process and then you’re good to go. To confirm it works fully, I went ahead and signed in with my Windows Live ID and downloaded/installed a free program (on a Touch Pro2). Enjoy!
Note: This will work for those who are having trouble with WM6.5 installations as well.