Sorry, don't have a good answer for your specific question, but I would add a comment about a CPU upgrade I did on my TDS5054B. Between the CPU(went from 2.0 to 2.8 or 3.06, i forget), and replacing the HDD with a fast CF card, it boots into windows too fast now, apparently before the vxworks daugterboard finishes starting the oscilloscope functions, so the tekscope application crashes on startup. I had to make a little script that pings localhost like 5 times, to add a little delay before starting the tekscope application.
Also, the CPU upgrade didn't help much with the actual TekScope application, since I think that's basically running off that daugher board.
Either way, good luck and I hope you find an answer!