Kilgray released memoQ 2013 R2, which seems to work, with the exception of the "Check out online project" feature - which is a bummer. I tried with memoQ 2013 R2 version 6.8.56 and version memoQ 2013 R2 version 6.8.55, but no luck. I contacted Kilgray, and they suggested that I reinstalled .Net 3.5 and .Net 4.0, which I did (.Det 4.0 was not installed yet by the crosstie), but no luck.
Anybody got an idea how to fix this?