Launcher Pro hasn't been updated since May 2011. Which means it has never been tested by the developer to run on ICS. You might want to look at different third party launchers that are optimized for the Android ICS operating system.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.
Yes, I switched to Nova which is ICS only, and perhaps the most like LauncherPro.
LP was really good, but too much time has passed. Of course, the site claims that there will be a total rewrite soon, but that was promised nearly 18 months ago, so harder to believe!