Has this been resolved? I'm having the same error with the Comanche. GSX updated to latest version, plane configured for deicing, has the wingroot and wingtip values in the config file. Same exact error as the original poster.
With "same exact error", you mean you were at KDTW too ? Is that a 3rd party scenery ? If yes, which one ? Are you using a custom GSX profile ? If yes, which one ? Provide the same details and YOUR log, even if your were at a different airport.