Thought I'd pass along something that confused me last night but that I eventually figured out.
We have several accounts on our Mini, and Nisus worked fine on one of them, but another account was having weird problems. The license agreement would appear everytime the program was opened; the spell check didn't work; the auto spell-check-as-you-type wasn't working, and some other issues.
I eventually figured out the solution: I had created a New File template in one account, then copied that template to the other accounts (in order to preserve the styles, etc., for each user). However, I forgot to change the permissions on the other accounts, so they could only read the template, but not alter it. Apparently, that affects a lot, because it sure caused some strange problems.
After changing the permissions on the templates, all worked as it should.