>Hi,
>
>I have some code:
>
>

mmSaveDataResult result = this.Save(this.oClient);

>
>and the result ends up as "SaveCanceled". Why would this happen and how do I work out what is causing it?

You probably need to step through the HookPreSave and through the rules. I usually find that it's either a business rule I've forgotten about or a typo in the rule logic when I have these problems.