There is yet another bug in the screenshot management. After having worked for a couple of weeks, your system has suddenly stopped showing the third screenshot on my Sokoban YASC default download page:
The end-user only sees a white blank area where the third screenshot should be. Clicking the empty space still works as navigation to the screenshots #4-6.
The problem has appeared without any changes from my side. I haven't even been logged in since last time your system destroyed the screenshots.
This new problem appears (at least) with all common browsers on Windows 7, 32-bit. The problem doesn't appear if I log in. After logging in, the third screenshots shows up correctly.
I haven't tried to upload the screenshots again. Even if it worked, it would only mean that you had lost this opportunity to correct the bug in your system, and I would have no guarantee that the bug didn't destroy the web-page again in a few weeks.