That copy of NVDAStartup is the original one. You should copy that to /S/L/E and overwrite the one installed by the web drivers. Then delete all the nvidia *Web.kext files (GeForceWeb.kext etc) and rebuild your cache.
in my experience, overwriting the original nvdastartup.kext into s/l/e without removing *web. kext files, did the trick.
remember to repair permission & cache.