I have noticed a few people having problems with the blog templates.
I have no idea what it going on with them, but they worked fine until Blogger decided to upgrade the system. This will take some time for me to look into to see what the problem may be.
PLEASE PLEASE PLEASE.....always save a backup of your design before installing one of mine. That way if it doesn't work, you can still go back to your original one.
I apologize about this and will hopefully figure it out soon.