I'm getting an error Error 1: Unable to create Window - no font was registered for ScriptUI to use.

I'm currently using Photoshop part of CS6 installed on Windows Server 2008 OS. Each time I try using Photomerge I recieve the error immediately.

Error 1: Unable to create Window

- no font was registered for ScriptUI to use.

Line: 388

->    var w= new Window(res);