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This class was removed and it resulted in a CNFE is printed to console when older settings is used. If this class is in any release it would be better to put it back and change their deserialization to avoid this problem. I haven't tested this with an older release (NetBeans3.3, FFJ3.0) so I am not sure about priority.
Created attachment 4584 [details] CNFE stack trace
Stubbed in the action class, and deprecated it. No references to it anywhere else.