Page History

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1. How to handle class not found exception for sender callback

2. Default behavior when no callback is provided for sender? - Should be same as current behavior
3. Backward compatibility behavior
   1. old sender connected to new receiver using new options
   2. new sender with callback implemented connected to old receiver without new options
4. Sort out security privileges needed for deploying vs installing with sender vs reading values for failed events written to disk.

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