the .n2p file refers to the vectorfile with the original name from the nat session. this is stored in the program, so renaming breaks the reference.
thanks for the freebie. will check it out.
edit: if you want a different name, go back to your natsession. in the left row doubleclick "offline", then type the new names and press deconvolve. that should do a new program and vectorfile. maybe you will have to check if the right wavfile from your session is referenced (at the bottom of the offline-menu).
system 1: windows 8 32 bit - samplitude prox/x3, tracktion6/7, reaper system 2: mac osx yosemite - reaper(32+64bit), tracktion6/7(32+64bit)
both systems on: macbook pro (late 2009), core 2 duo 3,06 ghz, 4 gb ram, graphic: nvidia geforce 9600M GT 512 MB