Audition 2020 problem with .caf file: supported but not the coding. error code 4

Hello,

i'm working Au 2020 on windows and it fail to open *.caf file, the system answer that "libsndfile" does not support the format, and "CODE 4, format supported but not the coding".

The same file *.caf is fine open by Au CS6 without any problem.

How may i fix it? i have tons of *.caf file!!!!

thanks to all,

Fabrizio