Serialization help...

[ronniin]

Hi,
how can you provide backward compatibility in visual C++??
Here is the problem. I have to version of software, unfortunately the
change in the latest version is so minimal that I cannot increase the
version number so that I can use it in the case statement of
serialization. So when I save the file using verion 3 (which doesnt
have data memebers in class) and read it using the latest version 5,
it tries to find the data memeber that were not there Giving
error..any ideas how to fix this problem??

Thanks in advance,
Ron