A day of unpleasant trial and error led to the following discovery. If I delete the file uparm/tbthen.fits, everything will work again. The file gets left behind every time though.
The "fix" if you want to call it that, is to add the following line to loginuser.cl
delete uparm$tbthen.fitsIt would be nice to make this conditional on the existence of the file, but my CL expertise is non-existant and who knows, maybe it will just make a little noise and keep on trucking. Why is this only required on one system? Who knows.
Tom's home page / [email protected]