When trying to create a Developer Certificate (.p12 file), it fails with the following error message:
Result: keytool error: java.io.IOException: failed to decrypt safe contents entry: javax.crypto.BadPaddingException: Given final block not properly padded
You have attempted to overwrite an existing Developer Certificate (.p12 file).
Delete the existing Developer Certificate before creating a new one. You may choose the file name and location of the yourkeyname.p12 file when creating your Developer Certificate. If a path is not specified, it will be called sigtool.p12 and located directories listed below.
Windows® XP: %HOMEPATH%\Local Settings\Application Data\Research In Motion
Windows Vista® and Windows 7®: %HOMEPATH%\AppData\Local\Research In Motion