colosa/processmaker — pull request #117 by herbertsg (2012-06-26 14:54:59+00:00)
Title: BUG 9180 Error unserializing APP_DATA with null value

Error
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Error unserializing APP_DATA with null value

Solution
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Verify if the APP_DATA contains serialized NULL before trying to unserialize
The APP_DATA with NULL serialized = "N;" is generated with the function PMFNewCaseImpersonate