I've been getting a lot of bug reports where X-Plane quits with a message about a missing .ter file. The problem is almost always installation related:
The only X-System folders that can support global scenery DSFs are the ones that started from the X-Plane global scenery DVDs.
Therefore if you want to use X-Plane 832 with global scenery, you must first install X-Plane 821, then run the updater to upgrade to 832.
If you simply start with 832 and try to copy files then you may miss some of the artwork and the missing .ter file message will appear. I will try to improve the error message with some clear instructions in the future, but only a proper install can remedy the situation.