Window Mail message blank

Hi,
I have Dell Inspiron 1720 with Vista 32 bit. I use Windows Mail. When I turned my cpu on, reboot, there was a notice that Skype was not working for some reason. Then when I opened Windows Mail, my new messages came in and nothing in the preview window. When I opened each email, nothing in them. Same with older emails. When I forwarded to my gmail acct I could read them. Any suggestions??? Thanks so much!
Barb

SOLVED...this was too easy. The problem occurred after rebooting but I rebooted again and the problem was gone. I'm all set until the next problem!! Thanks...