[dordnung]

Oh okay, you really have not much RAM (free) (apropos I think 1GB RAM is not enough for a game server).

I don't know exactly how 7-ZIP is working with the Swap, but i think your RAM is definitly the problem here (as the error already say).

Unfortunately 7-ZIP is not created by me, so i can't change that.

Do you use a selfmade plugin or an existing one? Because one idea would be do not to use highest compression (-mx9 --> -mx1)