I was in quickbattle 2.12 trying to configure a mission when a little while during the editing process, the plasma starting venting on and off and I did nothing to tell it to do that. This dialog box came up. I reinstalled nano fx2 (which took half an hour) and installed mvam infinite. Both seem to work fine except for this.
QBR 2.12 is very much out-of-date. I suggest you upgrade. Though, but havn't tested 2.2 with the Vent Plasma yet.