How to deal with Google Play Errors 194 , 905 , 927 and others

To resolve these Google Play errors, please try the following:

1. Go to the Settings menu on your Android device
2. Go to Applications
3. Select "Manage Applications" or "Application Manager"
4. Select "Google Play Store". If you do not see it check the "All" tab.
5. Select "Clear data" (restart the phone, if still dont work, then proceed to 6)
6. Select "Uninstall Updates"

When you start the Google Play Store again you will automatically download updates for newer versions of Google Play. After this process has finished, try installing the application you were having trouble with.
also,
Try clearing up the ram, by closing extra applications before installing apps from Google Play these bugs often come up because of low system memory or application conflicts. And never forget to check whether you have extra available space in your device or not.