I did some testing with the libs to see which one was making PdX crash when sending [info] and [listplugins] to the [plugin~] external
I moved all libs out of 'usr/lib/pd/extras/' directory and moved them back in one at a time while launching PdX in between each addition
I found the Gem lib was causing the crash so I did the same testing with the Gem directory and found that
Gem.pd_linux
was the file in the Gem lib that is making PdX crash when sending down [info] and [listplugins] to [plugin~]