Due to an error in the 9.6 updater the AE plugins installed by 9.5 are not replaced with the new ones that came with 9.6.
To remedy this you have to delete the following folders in this directory \CINEMA 4D R9\Exchange Plugins\aftereffects\
mac 5.0, mac 5.5, mac 6.5, pc 5.0, pc 5.5, pc 6.5
and run the 9.6 updater again.
If the complete after effects folder is deleted instead the examples and documentation will not be renewed by the 9.6 updater so you should leave them as is.
Cheers
Bj