Depends. The stock ROM has to be backed up using the same recovery as your using. If not then you won't be able to use it.
The best bet is to either flash the previous recovery you used to back up the stock ROM or just do a factory reset and flash the stock ROM again. Make sure you do a backup of your current ROM in case it fails to flash. If it does fail, you'll need to reflash using an older recovery perhaps since Kitkat and Jellybean use different mdsums.
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