fix found on other fourm helped me out
TEMP SOLUTION FROM SPRINT TECH SUPPORT:
I spoke with Sprint Tech Support a few times. This is what they came up with:
Go to Menu > Settings > Applications > Manage Applications > Google Play Store
Click on Uninstall updates
When prompted to Uninstall updates, click OK.
When prompted again to Uninstall update, click OK.
Message may appear, "Uninstall not successful." Click OK.
Return to Home Screen
Remove battery from device for 30 seconds
Reinsert battery and restart phone.
Google Play will be replaced with Android Marketplace
Click on Android Marketplace/Google Play and download apps using 4G.
DO NOT UPDATE to Google Play when asked. If you update, you will run into the same old problem. Eventually, there will be a Sprint/Samsung (or HTC) "fix" for this bug. When it eventually comes, you will need to restart your device for it to work. Sprint Tech Support wasn't sure when a permanent fix would be released. However, this will help until it is released.