[pca] xref link dead

[Martin Paul]

Hi Don,

> I'll look into it and come back to you.

Thanks. I tried it multiple times in the past two hour, and sometimes it 
works, sometimes it doesn't (on the same machine). Right now it works 
from two machines, but not from a third machine.

Another user reported the same issue to me yesterday - I had no problems 
at that time. Seems as if only one backend machine of SunSolve might 
cause problems once again.

Martin.