Summary #

Users of GMail cannot upload attachments.

More Information #

GMail made changes to their services recently that have caused intermittent issues with certain computers that try to attach files to their e-mails from their GMail account. To fix, just login to your GMail account and click on Settings > Under the General Tab scroll to the bottom and select the option: Always use https (under the Browser Connection option) > Click on Save Changes. Log out then log back into your account and you should be able to attach a file to your message.