Forest Card Art

In the process of trying to get my original MtG re-installed and working on an XP computer I ran across this site. Wow. Thank you all who have contributed to this amazing project!
Now, my question: I've found that very rarely one of my forests will display without art. I've created a deck of only forests and can duplicate the issue, but I can't tell if I'm missing one of the picture files or if it's some other issue. How would I go about figuring that out?
(I have 91, 91A...91T)
Best regards!
Now, my question: I've found that very rarely one of my forests will display without art. I've created a deck of only forests and can duplicate the issue, but I can't tell if I'm missing one of the picture files or if it's some other issue. How would I go about figuring that out?
(I have 91, 91A...91T)
Best regards!