IOError - cannot create file (linux daemon-invoked script)

[cassiope]

One more tidbit observed: my last note, that it works when using
seteuid/setegid?
Well - that only applies if the daemon is running under strace (!).
It fails
if started directly by root, or if the strace session has ended,
leaving the
main body of the daemon running in its normal headless manner.

I wonder if running under "strace -f" - might setegid/seteuid be
prevented from
having their normal effect?

Sigh.