I think I found the solution to my problem. It seems that the jre since update 6 (as near as I can figure) has been running more restrictively. For example with update 7 my preference were no longer being written to my jts directory (which was under my usual login id as power user). Prior to this, in fact for years, I had no problem with this. Now with the RC jre it wouldn't load past the splash screen.
Today I went to the security tab for the jts folder and gave the power user id all rights. Now TWS starts fine with the power user login.