command error

[rmk]

sometimes when I am using the TORIENT command it works fine for awhile,
then all of sudden I get this message.

Command: TORIENT

(*pop-error-mode*) underflow.
Cannot invoke (command) from *error* without prior call to (*push-error-using-command*).
Converting (command) calls to (command-s) is recommended.
Command:

what is causing this and how do I fix it?
so far I've had to save the dwg, exit out and reopen it.
I tried audit, but that didn't help.

thanks

[cadtag]

TORIENT is one of the express tools, and they have not been updated for a decade or two. Unsurprising that crashes happen with them...