This has been very frustrating for me! I recently updated my system, reloaded Omni Graffle Pro and every time I cold boot the system, Omni loads onto the desk top and I received this message:

the document "keyedobjects.nib" could not be opened. Running task / usr / bin / nibtool: launch path not accessible (do you have developer tools installed?). If I remove the program, this messages does not load!

How can this be corrected?