Thanks to everyone for your suggestions. Problem solved. I replaced the R2LC-06 with a R4LC-08 and my sounds were restored. I ran the engine for about 20 minutes last night with no problems/shut down. The weird thing, I've added the ERR CC-M to older K-Line models and never had an issue with sounds or shut down. Maybe they were outfitted with an 08 board from the factory. Thanks again!!!
Ok, so, newt. you had upgraded to ERR -CCMin a D.C. Motored geep. The CCM requires the use of a r2lc08 and the othe err boards R4lc from ERR.