[plt-scheme] Unbound variable in module

[pocm@rnl.ist.utl.pt (Paulo J. Matos)]

Hi all,

My code works fine, but as soon as I put it into a module, when
loading the module (require "table.ss") or executing it I get
'Unbound variable in module' error in a 'first. If I change it
into a car, everything is just fine. What's the problem?
Any ideas?

Best regards

-- 
Paulo J. Matos : pocm(_at_)rnl.ist.utl.pt
Instituto Superior Tecnico - Lisbon    
Software & Computer Engineering - A.I.
 - > http://www.rnl.ist.utl.pt/~pocm 
 ---	
	Yes, God had a deadline...
		So, He wrote it all in Lisp!