I am currently working with our Dataprocessing Department on this with real data in my VM and have additional testing to do but have come up with the following so far:

1: Load SP4 and it brakes the application

2: Don't install the Update from WSUS and install the Hotfix that is to correct the issue. I had them test the application and it worked

3: Pulled all curent updates from WSUS which put it at build 2273: Broke the application again.