According to this thread http://forums.te4.org/viewtopic.php?f=42&t=50260 other players' games, presumably without any unofficial mod will not load.
Another bug, btw, is still the healing salve in 1.6.0. The new changelog says:
As I know, in 1.6.1 when a healing salve is used Arcane Shield (Aegis T3) still not trigger.Fixed healing salves to correctly trigger on heal effects
Another issue: the Weissi Machine still gives a lot of outdated skills (not checked in 1.6.1)