Here is my website where I am getting the error http://rayhawkfam.com/
This is my tumbler blog http://rayhawkfam.tumblr.com/
I am having the same exact problem. It was working for quite a long time then for some reason I was getting the XML error on line 137. I deactivated and reactivated and only changed the setting to my blog, left everything else at default. It worked great. As soon as I changed the number posts from 10 to 2 I had the error. No matter what I do I can only get results if I leave the post count at 10 and I don’t want to pull in my last 10 posts from tumblr. I’m not sure what deleting posts from tumblr will do since the error does not occur if you leave the widget at default changing only the tumblr blod address. The problem only occurs when you change the amount of posts to display.
