The class 'COM/safe/fmewebservices/FMENamedConnectionEnv" could not be located. Check your classpathError getting id for 'COM/safe/fmewebservices/FMENamedConnectionEnv' with signature
'COM/safe/fmewebservices/FMENamedConnectionEnv'
From the reference below I copied all of the main window into a new workspace and it worked temporaily.
https://knowledge.safe.com/questions/60124/the-class-comsafefmewebservicesfmenamedconnectione.html