Application has generated an exception that could not be handled.
Process id=0xef4245 (15680069), Thread id=0xefa1b5 (15704501)
Click OK to terminate the application.
Click CANCEL to debug the application.
OR
Could not run dreamseeker.exe (error 00000005). Perhaps you should reinstall BYOND?
Numbered Steps to Reproduce Problem:
1. join game
Code Snippet (if applicable) to Reproduce Problem:
Expected Results: Game will launch
Actual Results: Game does not launch
Does the problem occur:
Every time? Or how often? Every time
In other games? Every game I've tried
In other user accounts? Yes
On other computers? Unsure, only own one computer.
When does the problem NOT occur? It always occurs. Sometimes no error message displays, even when the window closes.
Did the problem NOT occur in any earlier versions? If so, what was the last version that worked? No, but after the problem first occurred, all previous versions now have the same problem.
Workarounds: none so far
Clearly you're having a crash, so it would help to see the event viewer logs from some of these crashes.
I think you've also ruled out your antivirus way too quickly. This kind of thing absolutely smells of a false positive event in an antivirus program.