Hi,
I apologise in advance because I don't know how to post new threads yet, but I was browsing forums looking for almost the exact same problem, as I have a problem starting up a game. My logs were the same (corrupted processor_architecture_amd64), and I followed the solution until my second scan revealed 7 more corrupted files, two of which are named netathrx and prncache.
Shall I post a new thread or simply send you the logs on this? I don't know if this will affect jjt247 or not (First forum account)...
I hope this isn't too inconvenient!