Service Connect with SSO

We just switched our Epicor to Single Sign On (SSO) and now our service connect workflows are failing with an error message that says “Failed to Instantiate Epicor10 Session”

Does anyone know if service connect is compatible with SSO? And if it’s possible where should I be looking to fix it?

It definitely is, but I’ve never switched from basic auth to windows after installation…

Some thoughts
-is the client config file that .Net references point to correct?
-are the various sc services running under the right windows user?
-if both are correct, try reimporting .Net references for the heck of it