Just updated and now weirdly the 5e SRD dataset crashes when I select that game system using the 32bit HL under windows 10, if I use the 64bit HL it works fine! Loading any other game system seems to work ok with the 32bit HL.
Thanks. I'm able to open up 5E in the 32-bit version without a problem, so I don't think this is related to the update. Is it possible you accidentally installed the files in your 5E directory? Otherwise, this may just be a coincidence.