SAINT API - HTTP 500 Internal Server Error

I am trying to develop against the SAINT API with Java. I can call getCompatabilityMetrics() fine, but when I then go to call getFilters(), I am returned an error:

(500)Internal Server Error

I thought it had something to do with Axis, but I get the same error through a SoapUI call. Is something happening on the server side to cause this? Is this something on the client end that I am doing wrong?

Any help is appreciated!

Thank you,

- Dominick