I needed a cross platform file encryption system for Windows 7 and Linux Mint, so I tried TrueCrypt.
I created an encrypted file-type volume under Win 7, and can mount read, write and dismount the volume. All good.
Copied the encrypted file to Linux Mint.
I can't mount it using TrueCrypt in Mint, I get the following error after successfully getting past the requests for the decryption password and then admin password:
"device-mapper: resume ioctl failed: Invalid argument. Command Failed"