I got a No Parameter Selected error.
Looks like when I was cutting and pasting gauges, none of the "units" came with them.
The unit field is blued but I cannot change or edit the field. Double left clicking does nothing other than darken the blue field.
If I right click on the field I get a "Show All Unit Values". When I click on the Show All Unit values i get a popup of
"Murphy Configuration Tool 2.1.10741 (realase build)
Unhandled exception has occurred in your application. If you click continue, the application will ignore this error and attempt to continue. If you click Quit, the application will close immediately.
Cannot bind to the new display member. Parameter name: newDisplayMember."

After clicking the "continue" button I get a popup:
Value For All Modes window.
Nothing in the "inherited" field.

How do I correct the unit field?

I think the error is referring to the Measurement Systems. Sounds like the configuration your pasting into didn't have a matching Measurement System. For example the one you pasted from had a Measurement System called "USA Standard" and the destination did not.

The first thing to check is that both configurations have at least USA Standard as their first unit system. The only one that should matter is the first one but to be sure you might want to add them all to match.

Since this sounds like it could be a bug. If you want, please send me (via Private Mail) both configs (origin and destination) and give me the steps to recreate the issue and i can take a look at it for the next release.