Hey Tommy - you should be able to get Transmission working using the guide in this thread if you do what I did with the startup script (adding spaces after the square brackets - see my second post in this thread).
As for CouchPotato, I managed to get that working using the guide on this forum here - [GUIDE] CouchPotato V2 on MBL, but I had to manually go through the startup script and parse it correctly. I was going to post it on the thread for other users (or for the OP to just copy/paste into the guide) but the topic seems to be closed, so I’ll PM it to you.
I managed to get both working on my 3tb MBL once I’d parsed them correctly. Currently have CouchPotato working perfectly with Tranmission, controlled using an IMDB extension for Chrome! I only wish I could get SickRage (newer version of SickBeard) working for TV shows. I managed to install it and get it running on startup but it just seems to keep crashing.