I have a USB drive which is encrypted by Credant Mobile Guardian software. I have the key for this disk.

I am unable to read the disk (I/O Error) on a computer unless CMG is installed. This means that I am not even given an opportunity to authenticate or enter the key.

Is there something I’m missing? Shouldn’t I be able to read the disk if I have the key, even on a computer which doesn’t have CMG installed?