[gambit-list] Beginner problem with Gambit and Blackhole

I'm fresh in this environment and here is my problem:

tp> uname -mrs FreeBSD 7.3-STABLE i386 tp> bsc Loaded Black Hole. Gambit v4.6.0

(import (std srfi/13)) (string-upcase "Try this")

"TRY THIS"

(string-trim-both " xy ")

*** ERROR IN #<procedure #2>, "my/code/scheme/lib/blackhole/std/srfi/13.scm"@1184.1 -- Unbound variable: 13_#char-set? 1>

When I try to blindly fix the offending call in 13.scm to 14_#char-set I get other problems. Anybody knows what am I doing wrong? Maybe I pulled down the wrong version:

git clone git://github.com/pereckerdal/blackhole.git bh/

git clone git://github.com/pereckerdal/blackhole-libs.git bh/std/

--

Thanks, Karel Miklav