I have the same problem.
Windows Vista Business 64-bit on Lenovo Thinkpad W500.
CCleaner registry clean removed the synaptics entries and caused the software to error.
I found the software on the C drive and reinstalled to get it working again.
http://forum.notebookreview.com/showthread.php?t=284549
http://answers.yahoo.com/question/index?qi...27221816AAnBGvL