Symptom
When you open Sherlock or make it the active application, an alert box with this message appears:
"An unexpected error occurred. If you continue to encounter problems, quit and start again."
If you click OK, the same message returns.
Solution
Update to Mac OS X 10.1.
The following section applies to Mac OS X versions 10.0 to 10.0.4.
This issue can be caused by having a graphic file on the clipboard, which is the result of using the Copy or Cut command. To resolve the issue, put something that isn't a picture on the clipboard. You may follow these steps:
1. Switch to an application other than Sherlock, such as the Finder.
2. Highlight some text with the pointer.
3. Choose Copy from the Edit menu.
4. Click OK in the Sherlock alert box.
The message should not recur after completing these steps.