1Password not saving preferences, not syncing

I had a hardware failure which caused me to have to rebuild one of my machines which had 1Password installed. I put in a new HDD, installed Mac OS X 10.9 Mavericks, and let it recover my user data from Time Machine. I did not let it recover apps or computer/network settings. I only let it recover my user and home dir.

When I reinstalled 1Password, it immediately recognized all the existing data--prefs, extensions, etc. I was not taken through the new user "interview." Then I noticed that some of the data I had modified on another machine while this one was down had not synced in. I took a look at the sync prefs to see that dropbox was not setup. Then it hit me--I hadn't yet reinstalled Dropbox. Crap.

So, I reinstalled dropbox, but when I tried to point 1Password to it, it was acting like it was going to overwrite what was already in Dropbox. Perhaps I misunderstood what the screens were saying, but I felt uncomfortable with it. I wanted to find a way to clean out EVERYTHING related to 1Password and start as if from scratch on a new machine. Googling around, I found this comment: http://discussions.agilebits.com/discussion/comment/86340/#Comment_86340

I followed the instructions in that comment and everything came up roses. When I opened 1Password I saw all the new data, I made a change on another machine and saw it sync in to this one. I quit the app and moved on with my day. Later I opened the app on this machine again and it took me through the new user interview again. Odd, I thought, but I answered the questions and moved on. Nothing seemed out of the ordinary, and that didn't happen again. Later yet, after several hours and some work from another machine, I logged back onto this one and found that a new password I had just created on the other machine was not in this one. I looked at the sync stuff again and it was right back in the same state as when I first reinstalled 1Password, except for slightly newer data for having gotten a sync completed.

Once more I followed the instructions in the comment I linked and it worked initially--went through the interview, set my preferences, pulled down the vault from Dropbox, etc. The next time I opened the app, however, I was taken through the new user interview again. It keeps prompting me to install extensions as well. I don't know what to do--I am at a total loss.

How do I remove EVERYTHING 1Password related on this machine, and start over fresh, get it connected and syncing to Dropbox, and remember my prefs and such from there on?

Thanks,
Jim