I think I've got them all fixed now. I also sent you a PM - Please let me know if I missed any, and if it happens again you can report the image or send me a PM and I'll get them processed by hand.
I do not think there is anything you are doing that could be changed to make this work better. Even doing it by hand it sometimes took two or three tries to get the image to process properly.
It seems that your recent uploads are all ok though, so maybe whatever the problem was has been fixed already.
If not, or if you see any other images that are not processing properly, feel free to report the image or send me a PM and I'll work on getting them working.
PS: Thank you for all your uploads. There are some wonderful images in the set I worked on today.