No icon for file attachment

I have a user that can attach a file but there is no icon for the attachment in the body of the message just a blank box.

The attachment can be sent, opened, viewed and saved but there is no icon in the body of the message. What could cause this.

Subject: RE: No icon for file attachment

Check their Windoze display preferences. In some (all?) versions of Notes, a colour depth higher than 16-bit results in this.

Subject: No icon for file attachment

The icon is supplied by the user’s OS. It corresponds to the application that user uses by default to edit attachments of that type.

Subject: RE: No icon for file attachment

I should add that the user can see a icon when they recivie a file attachment. It is only when they attach a file that there is no icon. I never saw this befor.