The GostCrypt team is close to release a new version of the software with some features :
We found a bug in our implementation of the XTS encryption mode for an 8-byte block. The modulus of the polynomial we used was the same as the 16-byte block version. While it absolutely does not affect the security (except if you encrypt a file of size greater that 264 bytes), we have decided to modify the source code in order to follow the cryptographic rules. As a consequence, the primitive polynomial is not the same for the two versions.
We are correcting this error. Please be aware that this error is not source of cryptographic flaw. But it implies a non-respect of the specifications. This modification wil not allow you to open a 1.0-version container with the next version.