Dear Thunderbird: I have used Thunderbird for years. I click on Attach to add images to my email. To check the attachments, I would double click on each one and it would open in my Microsoft Photo Viewer for Windows. However, now instead of opening the image, I get Adobe Acrobat Reader Home page and no image. Has something changed in Thunderbird ? Or is there a simple setting I can change with your coaching ? Thank you for your help. Pip Spaull