Hi, Patricia,

There is probably a mismatch between the report and tables at the site. The solution really is to do a clean reinstall of the product that is giving the error.

I'm curious though, why wouldn't they just update the data to the current release when next they need to access it? Or, if this is Ledger, they/you could Import Prior Year Data?

Having multiple versions of a product installed at an end user site is not a supported configuration.