2 PCs running latest version of TB: 52.1.0. When a screen shot, embedded in an email, from a MS Outlook email is opened, the screen shot displays as it should on 1 PC, but not on the other PC. One PC is running Windows 10, the other runs W-7. I have tried all the advice out lined in this article: http://mzl.la/1BsOFeL to no avail. I tried to compare the about:config outputs of both PCs side by side, but they do not match line by line. The only items I spotted that do not match for certain are that the W-7 box [issue] is running NT 6.1 and the [working] box is on NT 10.0. I don't see how that can be causing the issue. More strangely, if the Outlook sender sends the email to the W-7 box and CCs me in on the [same] email to the W-10 box, then the in line screen shot appears correctly on BOTH PCs [!]. Again, this should not have anything to do with it, but...... 2 More clues: when the image does not display on the W-7 box, there is a line where the image should be with a file name something like "Image001.png@b21s584". In other words, what appears to be a.png image file with the "@" sign & various letters and numbers immediately after the "png". Further, there is an attachment for the email listed as "winmail.dat". While the appended/corrupted png file designation may be confusing TB, the image displays correctly on the W-10 box and the is no attachment appended to the email on the W-10 box. I am out of ideas. Any suggestions?