And the 2.5.4 installer craps out in the same way...  (Currently running 2.5.2.)

And it's unkillable from the TaskMgr with the same 116KB size.  

I also just tried to install the sources, and the PyQT installer craps out in the same unkillable way with a 116KB proc memory size.  

I now have:

2 2.5.4 installers running...
2 PYQt installers...
4 Electrum 2.5.2 instances...