Try this.
Generate a CHM output even if it is not one you normally use.
Just use the default settings. That updates the HHP file.
Delete the CPD and XPJ files and then open the project using
the HHP file to see if that corrects the database, which may be the
cause of this problem. Do that with a copy of the project and see
if it corrects the problem.
If it does, then read the topic on my site about opening
projects to see the things that need to be checked.
Post back and we'll take it from there.
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