The question is, what version are you running on the computer that is working, and did you ever actually purchase the Galvo license? There was a bug in the initial release of Galvo support that allowed some machines to keep working after the free trial of Galvo support was up. That bug was fixed in 1.2.02 and later versions. I’d suspect you are running the initial release on your machine that is working, and upgraded to 1.2.04 on your machine you are trying to configure now.
If you purchase the Galvo License, it will be added to your existing key, and your new machine will be able to configure JCCZ devices.