Ubuntu server - CIL Image not valid


I’ve been running on windows server for a while and now I decided to test out the Ubuntu version.
When I have to execute the mono CitizenMP.Server.exe command I get and error about a CIL Image that is not valid. I’ve searched this forum and google but I’m not getting anywhere. Any suggestions?

Im on Utuntu 16.04.1 LTS


This was due to running the CitizenMP.Server.exe from the Bin folder and not the root folder.