I would create a shortcut to Program Files\ThumbApps\ThumbCal.exe using Total Commander, and cut/move the shortcut to the root directory just to test it out before I actually move it to my Windows directory. VJBrisk was renamed to Calendar.exe and ThumbCal.lnk was renamed to CalendarLNK.lnk. No go, and it gave me the same error that false_apology and someone else received.
What solved the problem:
I copied a VJBrisk.exe into the SAME folder where the shortcut was created.. (Program Files\ThumbApps\ThumbCal). Renamed everything properly and this worked whether it was a .lnk or .exe. I tried copying VJBrisk (Now Calendar.exe) and CalendarLNK.lnk to the root folder again, and no go.
Ultimately, I just copied all the contents in \ThumbCal to \Windows. It works, so I'm happy! Fantastic app! been searching for a workaround to the M2D home screen calendar and this worked out exactly as it should. Thanks!