Batch file finds registry entry that's a path and uses it to find uninstall path

Question

I'm trying to silently uninstall AIM which is installed on a user's profile, not the machine. I'm using a batch script to find a registry entry that is the path where it's installed, then using that path to uninstall it. I'm not the best at writing scripts, but here is what I've put together.

for /f "tokens=3*" %%! in ('reg query "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\Low Rights\DragDrop\{7A02967B-018E-41c9-953E-3DCAB144538B}" /v "AppPath" ^|Findstr.exe /ri "\<AppPath\>"') DO (if exist %%! %%!\uninstall.exe /S /PopUpMsgBox="n" /CheckMutx="N)

I'm not sure what the issue is.