The mission night it doesn't escape, so you might be missing some condition. The hint of the quest describes exactly all conditions. (argus unit at 100%, right location?, infiltrator in lab storage cell not cargo stasis, ... ...)
Go to the pirate base, enter the middle ship in the lot. You will talk to the Krell guy (frog face). He owns a shop that you can buy a cloak for 480k or something
