I have the same issue. it is sending email to two ID's and it is not emailing to a specific ID. saying
"Warning: Can't find a suitable Email adress for recipient. MailAdress(es)=, Recipient=, ID=wm\JSpencer(2011-01-17 08:57:21)
Warning: Distribution reported warnings for resource "Sales ScoreCard Usage report_MailAttachment_1" (MailAttachmentDistributionResource). Warnings=1 "
I had looked for this kind of operations (sending email with attachments authomatically from QlikView) for long time and I found a couple of videos on YouTube that present a specific tool to compute such operations: