Has your problem been solved already? Have you posted it on tex.se with an MWE?
You say you have used the package "nomoncl" with an "o" instead of an "e". Is it a typo? The package "nomoncl" doesn't exist. If you change "nomoncl" to "nomencl" in your preamble, this might already solve your issue. If that wasn't the problem, you should head to tex.se with this issue. Happy texing.