Why does archive fail?

Hi,
This is my first post here. I've tried to search through the forums to see if there was already some discussion that could be relevant but I have not been able to find anything.
The problem is this. I have a rule that zips any file that is saved in a particular folder. The rule is simple:
All
Extension is not .zip
Name contains Mail
Do the following:
Archive
I'm sure this rule has worked some times because there are some files that are zipped. For reasons that I don't understand, though, now I'm getting this messages that say "Archive failed". How do I find out why it failed?
This is my first post here. I've tried to search through the forums to see if there was already some discussion that could be relevant but I have not been able to find anything.
The problem is this. I have a rule that zips any file that is saved in a particular folder. The rule is simple:
All
Extension is not .zip
Name contains Mail
Do the following:
Archive
I'm sure this rule has worked some times because there are some files that are zipped. For reasons that I don't understand, though, now I'm getting this messages that say "Archive failed". How do I find out why it failed?