Strange status in ACTIVATE command

May 29, 2008
533
3
Groton, CT
#1
TCC v 10.00.49 Win XP Pro SP3

ACTIVATE "foo" "bar"

works but results in
TCC: (Sys) The operation completed successfully.
"bar"
being written to stderr and to the error log file, and an error code (%_?) equal to 2.

I _believe_ I've seen similar things with other ACTIVATE options both in V10 and V9.

Shouldn't a successful operation return %_? = 0 and nothing written to stderr?