[plt-scheme] car: expects argument of type <pair>; given ()

From: Andrey Skylar (skyarland at gmail.com)
Date: Wed Aug 3 13:00:11 EDT 2005

I get this error all the time and every time it tells me nothing. 
Could it be made so that the error also tells you which function made
the invalid call?  That would be a lot more helpfull.


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