I found this in a response to someone who was having a similar error to me: 
http://stackoverflow.com/questions/20219229/laravel-4-how-to-find-route-for-notfoundhttpexception
It was very useful, because the stacktrace and the error log only show that there is an error and what kind of error, not the specific route that causes it. This just pops up the actual route right above all that stuff in the log file. I would not have realized that the get/post discrepancy was the problem without this code.