ExternalLibrary>>invalidCall ... 'invalid receiver'

Hi,

What does the 'invalid receiver' error mean in
ExternalLibrary>>invalidCall?

FWIW: I have seen this in two different images recently. One in an
image with a very intermittent socket problem. The error was in a send
of WS2_32Library>>send:buf:len:flags:.

The other was in KernelLibrary>>copyFile:lpNewFileName:bfailIfExists:
... that image did not have long to live.

Thanks,
Steve
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