What could possibly cause an SM or AP to keep rebooting and the event log shows an error having to do with expected luid vs. actual luid or a mismatch between expected frame number...

What could possibly cause an SM or AP to keep rebooting and the event log shows an error having to do with expected luid vs. actual luid or a mismatch between expected frame number ( ExpFrmNum ) and actual received frame number ( RcvFrmNum ) error message?

These type of error messages indicate something is interfering with the control messaging of the unit. If your unit is not on at least release 4.1 you may want to consider upgrading to 4.1. Also ensure that you are using shielded cables to minimize interference issues. You may also want to consider trying different frequency options to get around the interference.