The RB800 is running RouterOS v5.7, and has 4 x R52Hn-m cards.
The error message is written in the log file after reboot. Contents of the autosupout.rif file include the following:
bad command name bios (line 3 column 18)
In bold are the items I've found to be odd....
I'm going to upgrade to 5.9 and upgrade the routerboard's firmware as well.. Hopefully this will resolve the problem. Just wanted to check to see if any others were experiencing similar issues and found a resolution.
I'll be opening a support ticket with Mikrotik shortly.
The board is fairly new and has been in service for about 3 months. I can't tell when the problem first happened as the routerboard reboots before the monitoring software can poll the device and detect a problem.