ok, the problem is in the way the store doesn't overwrite any of your existing setting or templates when an upgrade is applied. So even if you upgrade to the latest version, the stg3form.template will still be your old one.
Have a read of this page to understand what's happening, and then you can refer to the instructions at the end of the page to reset a single template. You might also want to upgrade other items, depending on how much you have modified... e.g. the stylesheet.css and list and details templates.
It also depends on how old your store is.. there have been plenty of updates to the templates over time.
https://nbstore.codeplex.com/wikipage?title=Reset%20and%20upgrade%20your%20configuration&referringTitle=Documentation
Regards
Rob
Have a read of this page to understand what's happening, and then you can refer to the instructions at the end of the page to reset a single template. You might also want to upgrade other items, depending on how much you have modified... e.g. the stylesheet.css and list and details templates.
It also depends on how old your store is.. there have been plenty of updates to the templates over time.
https://nbstore.codeplex.com/wikipage?title=Reset%20and%20upgrade%20your%20configuration&referringTitle=Documentation
Regards
Rob