Heart of gold, Lvl 2 - Rhoad - Artifacts not usable

Hi there,

i have the problem, that after (owning and) using 2-3 artifacts and saving the game for playing on the next day, the other artifacts become broken. my imps can own the artifacts place, the cultist can work/decode it, but i cant activate it because the globe has gone on every artifact.

do you have any idea what the problem is, if you understand what i mean? sorry for my english

cheers Alex