Grants.gov is transitioning to an all Adobe format for submitting federal grant proposals. They are no longer using the PureEdge format. The change requires the use of Adobe Reader 8.1.1 or newer.
To determine the version you are currently using:
If your version is older then version 8.1.1, you will need to upgrade. To upgrade:
If you do not see an update option, or you don't have Adobe Reader installed, you can download it for free from the Adobe website.