I'll let the original poster answer on their own, but here's my situation. I'm new to ArcGIS, just a student, and I'm working through "Getting to Know ArcGIS for Desktop" (third edition). I have ArcMap 10.1 installed on my computer.
The address locator was created locally by ME, following the directions in chapter 14a and the sample data that came with the textbook. After adding the address locator in chapter 14b, it happens when I try to close that map.
The issue is that when this error message comes up, there's no way to make it go away. Hitting either button (Yes or No) just causes the error window to pop back up in a couple seconds. I have to manually kill ArcGIS and related processes to make it stop - just quitting the program isn't enough.
I can continue to progress by just moving on to the next chapter, but if there's a way to troubleshoot or fix this problem, or even just understand it better, that would help me learn more. Thanks!