Your issues happen on 6.60 and not on 5.50 because Sony prevents us from doing syscall estimations on 6.60. Hence, if the game is not importing a function used by VHBL, VHBL will crash when trying to use that function.
second, the part of VHBL that requires the most functions at startup is the part that frees memory. This is probably why both your games are crashing at this step.

