Reports in Accounts Production on a Mac will be displayed in the local language if English is not the primary preferred language. This will likely cause returns to fail validation, as reports will be shown with dates in the primary preferred language.

The failure reasons will be similar to that pictured here:

In order to resolve this, the primary preferred language needs to be set to English.

1. Open the Dock.
2. Select System Preferences.
3. Open Language and Region (you will see the following box appear):

4. Drag English top the top to be the preferred Primary Language.
5. Restart TaxCalc.
6. When reports are now run, the date will be in the correct format and should pass validation.