So a week or so ago I updated to 514.1585, and since then I am able to play maybe one or two games of SS13, until after which is says

"C:\Program Files (x86)\BYOND\bin\dreamseeker.exe"
(server address)-pager

followed by

Could not run dreamseeker.exe (error 00000002). Perhaps you should reinstall BYOND?

which I have done multiple times now (both as an admin, with all firewalls shut off) and it'll again work for a couple games before giving me the same error, kinda stumped with this one.