Unable to open forwarded email on HTC Eris

I have several users at work who have the HTC Droid Eris. We allow our users to connect to our work email via IMAP. We have an issue where when a users receives forwarded email, they can't open it. It give them the option to save to the SD card, but when you click again on it, it still only gives you that option. I tried one of our users, who has the new incredible, and it works on his once he saves it to the sd card, it gives the option to open. Has anyone gotten this issue before, or is there a work around for it.