I am unable to run my signed, release keystore in Eclipse:
I get the error:
Keystore was tampered with, or password was incorrect
H
The obly thing i can advise is to check the password for the appropriate language and case, and also make sure your keystore is in consistent state(but don't have a clue how to do it, if you haven't generated checksum).
The general advise for keystores: always make a backup.
Also, keystore is the thing to make sure you're one who have created the application in the moment of updating it. IOW, it is a tool to let only you update your application.