One of my saves from 2013 is now boken as it seems SPRK can jump larger gaps than before (or something), causing it to short out. I've been trying to fix it, but I can only get it to work once before breaking again. The problem is the diode under production gets sparked when the titanium cray to put the first lead on it fires, then the CRAY producing the second titanium lead fires twice deleting the titanium so when the pistons move it, there's only insulator on one side. The diamond marks on the delay line are the offending signals, there was originally only one but I made a second pulse which allows it to work once, but then it ends up back in the same state.
Fixed it. I moved the placers up one and changed the BRAY cleaning beam from piston driven to a static location (which cuts a whole bunch off the controller).