did u get this resolved? i have also switched to intel and 10.4.9 and live 6.0.5 and my vst plugins are not being seen either - i know for sure some of them are universal binary
i started live (v.XXX15) and then started reason, as i am used to doing.
however, it did not show reason on the input list
i then started version 5, saw reason on the input list, and when i came back to 6 it was working. i don't know if starting version 5 was the reason it works now