Error when opening eRes : Can't find resource for bundle.za.co.hti.eres.Resources, key Could not copy Word Templates

1. Error Message
I received the below error message when opening eRes:
- Can't find resource for bundle.za.co.hti.eres.Resources, key Could not copy Word Templates. You may not be able to open invoices/vouchers in Microsoft Word.
- This error is stating that an existing eRes Word template is still open and therefore you will not be able any Word templates on eRes.
- Close all Word templates that are still running or check if Word is running in task manager and force it closed.
- Once done close and reopen eRes.