You should reroot, this time the right way. Here is a good link
[GUIDE] How to root Android 2.2 on the EVO 4G - xda-developers
You will be able to attain full root with this. If you dont fully root, then (copied from the sticky):
Q. What does Rooting Part 1 only NOT do?
A. If you only did Part 1, and nothing else, then;
It does not allow you to remove OEM installed apps. Like Sprint TV or NASCAR or Sprint Navigation.
It does not allow you to install programs on your sdcard.
It does not allow you to install custom roms.
It does not allow you to install newer radios.