Force MageRewards Reinstall
To re-install MageRewards follow these instructions:
- Disable MageRewards
- Force MageRewards Reinstall Database
- Put the store in Maintenance Mode. This is to avoid interrupting installation scripts.
- Disable all Magento Cache and 3rd party cache (like APC, Varnish, etc...)
- Install MageRewards again the normal way
Note: If you see an authentication popup (this is for updating to version 1.9.0) you need to enter Admin username and password, then follow the steps.