Thanks for the replies. As RM is on my laptop, which doesnt usually have an internet connection, RM has not been automatically updated in the past. I was also not aware you couldnt skip previous version updates. Due to problems getting any life at all out of the elink when I first installed 1.74, I had already added the 3 new lines to my .ini file, having read another thread. However I've now made sure they match what P-Henny suggests. The rectangular red button seems to work now to reset the elink, which helps speed up the derailment process. I was not aware of its purpose before, so never used it, so it may have worked all along.. I still don't see the short-circuit message though.