Version 1.0 wrote a value of 253402300800000 for DateTime.MaxValue. Version 1.1 writes the correct value of 253402300799999.

The problem is that existing DateTime.MaxValue values written with the 1.0 version can now not be read by the 1.1 version.

There needs to be some kind of backward compatibility mode with existing data in the 1.1 version. It is probably OK if the 1.0 version doesn't correctly handle data written by the 1.1 version (comments?).