Siebel 3.0 Adapter: Kills Local Application or Siebel Call C

Adapter: 3.0
Siebel Version: 7.5.3
Integration Server: 6.1

We are calling the SyncISInvoke Business Service in Siebel to pass data to the Integration Server. Intermittently, when we are encountering the following error (Siebel.exe error) when we attempt to pass data to the integration server. This error causes the local dedicated Web Client to shut down.

If we try and use the same repository on the SiebServer and access it through a thin client then the Call Center Object manager dies.