The error you are receiving may be due to a corrupt Scripture Theme that you are using. Try these steps:
1. Open EasyWorship.
2. Click on the Themes tab, and make sure Scripture is highlighted to show the scripture themes on the right hand side.
3. Right-click on one of the themes you are not currently using and click on Set as Default Scripture Theme.
4, Close and re-open EasyWorship.
5. Now try adding a scripture to the schedule and go live with the scripture.
You should no longer receive the Range check error.