In both cases, the contents of
C:\Program Files\Common Files\microsoft shared\Web Server Extensions\wpresources were deleted. I have some 3rd party products that deploy files here.
I don't have anti-virus installed. The folders aren't in the recycle bin. The folders were NOT missing immediately after the service pack deployment. It happened some time over the course of 3-4 days.
Is this expected? Can anybody explain what's happening here?
I installed the binaries on my 1 web server and ran
psconfig.exe -cmd upgrade -inplace b2b -wait and it went through successfully. I've done this many times. I don't think it was a matter of me installing the service pack incorrectly.