Mojave T-Racks and Amplitube plug -ins cause Audition CC 2020 Crash at Export Multitrack Mixdown

Please help,

Macbook Pro Mid 2015 Retina Mojave 

 Audition> Export> Multitrack Mixdown> Crash

ONLYwhen using Third Party Plug-Ins Ampltube 4 and T-Racks 5

Is it possible that some configuration issue is causing Audition to freeze (not responding) when I use the IkMultimedia third party plug-ins? I have tried uninstalling then reinstalling OS, Applications, Reregistering, Restoring through Custom Shop. 

Please Help,

mishmael