debugging scheme module

[Al Nikolov]

Hello, all!

I'm totally newbie in Guile and R5RS, faced to write a scheme module for an
application written with Guile.

When i do just another wierd mistake and run the app, i usually get
uncomprehensive error messages like:

Fatal error: [library-name] wrong-type-arg: ("caddar" "Wrong type argument
in position ~A: ~S" (1 ()) #f)

Since my scheme code is bigger than two parenthesis and three lines, i
feel myself totally embarassed by having absolutely no idea where to look
for the trouble and what those "~A"s and "#f"s mean.

Could anybody be so kind to give me directions to fight my ignorance?

-- 
Regards,
Al Nikolov       jid: address@hidden irc: clown uin: 312108671
pgp fingerprint: 4B50 F1E3 080C 21A2 91F4  8BF0 CD60 3B5A 2ECF 984B