If you are seeing this error, follow the steps below.
- Close DesignShop v11.
- Open DesignShop v10. If you are unable to open DesignShop v10, please review the article covering: The Product Serial Number Has Been Activated On Another Device, before trying to activate DesignShop v11.
- Click Tools > Deactivate Product...
4. Click Yes > Yes > Done.
5. Try to activate DesignShop v11.