Dave, I had exactly the same problems with some pre-layout and very small temporary loops when I first got my DCS system. It is a Rev L, got it when the Rev L first came out, so I don't think the problems caused by no breaks/blocks have gone away. When I made my more permanent layout I followed Barry's book, made blocks, used MTH terminal strips, etc. and I have not had a DCS error in over 4 years (other than self inflicted ones). Sure made a believer out of me as far as gaps/blocks are concerned!
Mowingman, I would follow Dave's advice above if there is any possibility you will ever add DCS. If you do plan to get DCS, I would suggest getting one of Barry's books and following his recommended wiring methods. There are 2 of Barry's books now, one for the DCS TIU and Remote and one for the DCS TIU and Wifi setup, whichever way you plan to go (I have both because I added wifi after having a TIU and Remote). Barry is very generous with his knowledge in assisting others here as well.