I just finished all the runs of exotic mission 'Operation: Seraph's Shield' required to obtain all intrinsics and catalysts for exotic pulse rifle 'Revision Zero'. Unfortunately, I have encountered an 'Unknown Error' which is preventing me from finalising the shape for the weapon. I presume it's to do with the intrinsic 'Hunter's Trace IV', or rather, the conspicuous and baffling absence of 'Hunter's Trace III'. The linked video shows the problem I'm having. Help needed! Thanks!