"Attempted to read or write protected memory" Error

Question

We get the error "Attempted to read or write protected memory" when receiving a file via FTP on BizTalk Server 2006 R2 with service pack 1. We are running a 64-bit Windows 2003 Server but the host is configured for 32-bit.

Here's the full error message: There was a failure executing the receive pipeline: (myPipeline) Source: "Pipeline " Receive Port: "FlatFileReceive" URI: "ftp://myLocation//." Reason: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

Is this the same as the AccessViolationException which has a hotfix here: http://support.microsoft.com/kb/923028

Any help on resolving this appreciated.

Thanks, Krip