Blogger - Whooahh Thats an error

If you have a template that have ads to generate money.

Sometimes, the ads server is closed down and suddenly becomes pop up advertising.

If you try to modify the template, it will not work since the template will fail to load with error:
Whooah That an error (some error number).

Steps to fix:
1. Change all your posts to draft only
2. Go to template, try to press "X" before it complete reload
3. If you are lucky, you will see "revert" template to classic.

Use that and modify the html template and remove the ads server that was down.