OP sent me a private message with his (broken) code so far and there I also found this code "\\nbladiebla". This would only produce "\nbladiebla".
Only if you would want to princ 2 lines , on the first line a \ and the second line bladiebla you would use (princ "\\\nbladibla")
But especially in the context of OP's program this makes no sense at all , so whether it's a typo or a search and replace horribly go wrong , lets purge this from our brain cells , preferably with lots of beer (or babymilk , whatever) and for now don't PM me unless for dirty pictures or something because I don't have the time to be your private dancer (Tina Turner) , its 01.30 am and I have to present a new app (automatic instrument loop checker , dbx) at 08.30 am and it's not finished yet so this is gonna be an all nighter , bummers