exporting address book issues

i can not email more than one address card successfully. i'm trying to email from my mac address book and opening in a pc (outlook) to load contacts. if i open a contact in address book and hit share the contact is sent and opened successfully in outlook. But if i select more than one name from my address book it does not work. All contacts are attached to email in mail, and when i open the email on my PC (outlook) i see all the .vcf cards with the right names...but if i open each card there isn't any info on the card. any thoughts? thansk!