Problem:

Using Server Express 4.0 SP2 on Linux

cob -iav pi.cbl

export COBSW= A

$COBDIR/bin/rts32_t pi

will not animate "jumps" to empty screen, ^C  to exit.

Displays error:

Trace/BPT trap

Resolution:

The work around is not to use the threaded runtime (rts32_t)

cobrun pi

This is a know problem and it has been fixed in Server Express 5.0