Foolish me, I upgraded to Windows 10 from 7 about a week after launch and have had nothing but problems with DDO (and nothing else) since. Immediately after updating, I started experiencing extremely long load timea and zone in crashing 25-33% of the time; I started keeping a second window open so I could relogin fast enough to keep up with PUGs. Eventually I got tired of that, and uninstalled/reinstalled DDO. That's when the real problems started; now I can log in and play once after every reinstall, but I still crash. When trying to relog, I receive Game Error 201: Can't open the data files. Check that they exist and that you have permission to write to them.
I've run several malware scans (per suggestions on this error, all of which appear to be at least 3+ years old) and tried running as administrator with no luck. All I can do is reinstall the game, log in once successfully and then get the error again, forcing me to reinstall again to play for one login. Result: I can play DDO ONE TIME every reinstall.
Anything I'm missing?