Corrupt revision files

Hi all,

I'm using ProjectPier and it's been extremely helpful, nonetheless there are a few issues that should be corrected.

One of them is that after I've added revisions to a file (usually graphics, ie., PNGs, JPG, GIF), the older files become corrupt, making it impossible to track on former revisions.

This is a big reliability concern, especially if the only copy you have on a revised file exists in your ProjectPier repository.

Any ideas why does this happen and more importantly how to solve it?

Thanks!