Exception is occuring only on my machine: Method not found: WaitHandle.WaitOne(Int32)

Question

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

Answer 1

From MSDN it looks like WaitHandle.WaitOne(Int32) was added in SP1. Either check for this in the source, the installer, or use the 2 parameter version.