GnuCash reports with zero values?

If you do a report in GnuCash for accounts with currency x (say AUD), but the GnuCash default for reports is currency y (say USD), then you will get an error message about zero values, or a report with all zeros.

The solution is to alter the report's currency to match the account's currency.

Why? Because the accounts really do have zero balance in currency y - but that's probably not what you intended to report on. Really you wanted a report on currency x.

Note: you can change the default currency for reports in the preferences.