Connection problem PLCSIM (S7-1500)

Hello,
We have some issues, connecting factory io to PLCSIM(S7-1500) . The same Problem persists on 4 different Computers. After trying to connect, we get the error message “Memory Problem” .
Did anybody encounter similar problems and/or does anybody have a hint !?
Thanks for your help

regards
G.Reding
(pictures attached)