JavaScript Error at Startup of Notes

When I start Notes, I get a Javascript error partway through the process. There is no indication of what page, database or whatever it’s trying to access.

The error is on line 140 and is a “test for equality(==) mistyped as assignment(=)?”

I know what it’s saying, but there’s no indication of what particular database or component is complaining.

Has anyone seen this one? Note, running under Windows 7.

Thanks