I will try to help those people with the LauncherPro dock icons issue
If you try to just add a shortcut to the dock and set a custom icon at that point, then as you are aware you get an FC. This has been raised with the Dev so hopefully should be resolved soon. However, in the mean time you will need to use FolderOrganizer to do it.
To change the icon of an App:
1 Run FolderOrganizer
2 Locate App within the default labels showing up. Usually under Apps or Other Apps.
3 Press and hold for a sec on the App. A small horizontal window appears.
4 Scroll over to Icon and press.
5 Select where you want to get icon from. Android Gallery if icons are on SD Card or Icon Packs if you downloaded packs such as the iBox ones.
6 Find icon and select. This will now have set the icon for that App.
7 Now, exit FolderOrganizer.
8 Long press on Dock where you wish to add the App.
9 When selection window appears go to FolderOrganizer
Item
10 When Next window appears select Apps
11 Scroll through to the App you want and select.
12 Think, "Thanks dajomel" cos that's Job Done
Now, if like me you group Apps together under a single Label in FolderOrganizer such as Games, Tools, Multimedia etc then Steps 9-11 change to:
9 When selection window appears go to FolderOrganizer
LABEL
10 When Next window appears select the Label for your group of items.
11 Think, "Thanks dajomel" cos that's Job Done
Hope this helps you all out