Hi EyeVee,
When you install a new version, or just a new installation for the first time, you need to reconfigure the BAS, i.e. re-click on the G1, G10, etc. and select your tax codes.
Feel free to send me an email as I have a document on how to do this if you need help.
Kind regards,
Sally McIntosh (Sally@samsolutions.com.au)