Labview TCP error 42?

[zio]

I occasionally get an error 42 in TCP read vi. This error is not listed in the Labview 5.1 help or on this site. Does anybody have an idea of what is happening?

[JRA]

LabVIEW uses error 42 to mean "Generic Error." You can actually find what errors mean by going to Help>>Explain Error... and entering the error code. However, that does not help us too much here! The only information I could find relating error 42 to TCP was this KnowledgeBase [broken link removed] which associates the error with trying to open a remote session through firewalls or proxy servers. You might want to check that out and see if it's relative to your situation.

[zio]

I don't think this is the case. I get the error one out of ten times trying to establish a telnet session on a private local network. Most times it works, some times it doesn't. Session originates from a Win NT machine to a net camera (don't know what OS).
I wonder what "Generic error" means. Is it a bin for any error that is not explicitly classified?