[HECnet] "illegal record size" in RSX?

I don't know how to ask RSX for that...I used to be a heavy user of RSX, but that was in the 80s; I seem to have forgotten nearly everything. :-( I have no problem with hitting the books; I'm generally pretty self-sufficient in that regard, but I'm about to load these machines onto a truck and take them to VCF, so I'm just short of time. Things have gotten a bit less stressful about that since some hardware (not the 11/34) has started to behave, and now it looks like some of the machines will be on HECnet during the show, so I'll be able to get some software on them then.

-Dave