xymon-4.3.0-beta2 unlimfgets error

I'm testing xymon-4.3.0-beta2 on Solaris and I'm seeing the error in the bbtest page for the server:

umlimfgets() called with bad input FD

[Note: I did not typo the function name - that is the literal spelling in the error message.]

Aside from the fact that the name of the function is misspelled in the error message (which should be fixed), what do I need to do to fix the actual cause of the error?

Thanks, Steve

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