It seems the installer doesn't like some remnants of that tool. Assuming you have looked for it in Control Panel/Add or Remove Programs (XP), Programs/Uninstall a Program (Vista/Windows 7) & uninstalled.
Have you contacted them for help?
Also try the following:
Go to Start/Run and enter regedit hit the Enter key.
HKEY LOCAL MACHINE/SOFTWARE/MICROSOFT/WINDOWS/CURRENTVERSION/UNINSTALL
Look for any entries in that key that pertain to spy-emergency and delete them. Be very careful to only delete those entries and none of the others.
If that doesn't help contact our Technical Support Chat via the Useful Links at the top of this page.
They may know a tool to use to weed this out. It's a free service.