Assembly-Csharp-firstpass.dll?

Every time I delete a script I get a compiler error that says that the file Assembly-Csharp-firstpass.dll is denied. It's extremely hard to fix. How do I stop from getting this error?

http://answers.unity3d.com/questions/614570/how-do-i-get-rid-of-assembly-csharp-firstpass-and.html
(First hit when Googling for "Assembly-Csharp-firstpass.dl" ;))

Only use this specific forum for documentation related topics, not general support requests, please :)

Best regards, Rasmus


Thanks. I've never reported a file problem so I had no clue where to put it