Error Training Message in Apple Mail

Just upgraded to 14.3.1 and now I get an AppleScript error when training on a message.

What does the error message say? Are you training the message as good or as spam?

SpamSieve encountered error -1751 (errOSAInvalidID - ):

<unknown error>


<unknown location>

Same message for training either way.

Thanks. So far, I’ve only received one other report of that error, and that was several months ago with previous versions of SpamSieve and macOS.

Does SpamSieve’s Log window show anything when this occurs? Does it help if you restart your Mac?

There’s nothing in the log window:

Did you try restarting the Mac? Is the problem limited to messages in a particular account?