First, re-install Icon Packager.
Open IP Config and select Windows Default Icons and apply.
Click on the Settings Tab at the top of Config.
At the bottom left are three buttons. Click on all three a few times, tap your heels together 3 times and say "I want my Icons, I want my icons, I want my icons"
Log off and back on, or restart explorer.
Check to see if the icons are all back. If not, repeat the reapplying Default and all the button clicking and such, but you can skip the heel tapping.
Once you are entirely certain all is ok, uninstall IP.
If you have some blank looking icons left over, don't panic, there's a fix for that too.
Let us know how it goes.
