Viv,

>I have downloaded and installed the current msi. and, as you say, the behaviour has disappeared. However changes to any cells in the 'Order Detail' grid are not saved at all when I use the navigation buttons unless focus is first moved away from the cell (I don't know whether this was the same in the previous version).

I'll take a closer look at this.

>On a related note: How do I (or you) determine exactly which version of an assembly I'm using since there is no build information in the versioning.

When we publish a hot fix we don't change the version number to make it easy to install the new version without having to repoint your projects to new versions of MM .NET assemblies in the GAC. We post the date of the .msi file on our download page to track the date of the build.

Best Regards,