[daip] Flux calibrator model problems with U-band VLA-only observations?

[Jeff Mangum]

Hello,

I have U-band-only VLA observations taken this February that I am trying 
to calibrate.  When I try to use CALIB with one of the built-in models 
for 3C286, the task simply dies without indicating what the problem 
might be.

localh> CALIB1: CALIB USING 20080223     . CH 0   .   1 DISK=  1 USID= 277
localh> CALIB1: Doing no flagging this time
localh> CALIB1: Purports to die of UNNATURAL causes

I have tried modifying several input parameters, but cannot get past 
this point.  I wonder if the fact that my data only has 14 antennas 
(only those with U-band receivers) is causing problems?

-- Jeff