Exception is occuring only on my machine inside a referenced .dll: Method not found: WaitHandle.WaitOne(Int32)
This appears to be a .NET runtime version problem but I've installed .NET 3.5 and restarted and am still seeing the same issue. Gacutil shows mscorlib Version 2.0.0.0.
We have modified the code to call the two parameter WaitOne() API and things are working on all machines. However, it would be helpful to know why some machines with .NET 3.5 installs do not contain the single parameter version of this function.