Attaching in Primavera Contract Management with WebCenter Content

I am attempting to integration Primavera Contract Management with WebCenter Content. I have followed all steps in Doc ID 913960.1 and Doc ID 913985.1, which specifically address this integration.

After configuring, I *do* see "attach from repository" link on attachments page, which suggests to me that PCM was able to make its initial connection to WCC on boot.

When attempting to attach document, user gets a window that shows either just "null" or the following (two tests that I've seen, which may be slightly differen):

null

Transaction Rolledback.; nested exception is:

weblogic.transaction.internal.TimedOutException: Transaction timed out after 30 seconds

BEA1-02BC39DEBBFBE9CC4891