Hello Angela,
It's possible that an improper backup/restore or program exit has left some temporary SmartFinder files in your data directory.
SmartFinder temporary files have a name format of xxFnnn'I and xxFnnn'R. xx is the application (say AP or GL) and nnn is some 3 digit number. The first created SmartFinder results file for AP would have 2 files APF001'I and APF001'R.
After everyone is out of the data, all of these files should get cleaned up. Any existing files like this could cause problems the next time - they should be removed.
If one of the files in the matched set exist and the other does not, that could give the '1011' error you are getting. Error 1011 typically means that either the index or the random file is missing.
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Andrew Bates