Tried and failed to convert aifc files - got error message:

Error converting to Wave, 'Q:\Jupiter 1.aifc' to 'Q:\Jupiter 1.wav'
Error - file has compressed audio (not supported). [clWaveDecoder_AIFF::PrepareToDecodeAudio]


Used Adobe Audition in the end so the file wasn't corrupted.
I was using 16.6 - is this a version problem ?

Thanks