Added detail to the comparison error message to prevent messages with the same name from getting overwritten.  Also, moved the 'human readable' error message to a different function.
Added detail to the comparison error message to prevent messages with the same name from getting overwritten.  Also, moved the 'human readable' error message to a different function.

vc3/ExoWeb,vc3/ExoWeb,vc3/ExoWeb,vc3/ExoWeb,vc3/ExoWeb