The error "Key not valid for use in specified state" is seen upon trying to install or upgrade the AutoStore 6 OmniPage Add-on on a Windows 7 64-bit machine.
This is likely caused by a Windows Security update KB2918614.
Uninstall the Windows security update KB2918614, using the following steps.
- On the Windows system open the Control Panel -> Programs -> Programs and features -> Installed updates
- Search for the KB2918614
- Right click and uninstall the update
- Restart the OmniPage Add-on Installation