I ran the 10.13.66-1.sh upgrade script on a 6.12.65-32 system. I saw several red lines of text flash past but too fast to read them. When it finished I rebooted the system and asterisk would load for a few seconds and then reload, over and over every few seconds. I do have the Digium DPMA module installed. I shut down asterisk and upgraded it also. Asterisk did better at staying running but would still randomly reload once in awhile. Any suggestions?