[plt-scheme] Error installing 299.404

Hello, I tried this with 299.400 and .404, it used to work on Gentoo, but now 
on Kubuntu I get an error. I bet I am missing a library, but which one ?
These are the last lines of 'make install':
setup-plt: Installing MzScheme 
launcher /home/pupeno/plt/bin/web-server-monitor
setup-plt: Installing Help
setup-plt: Installing Draw Teachpack
setup-plt: Installing ProfessorJ
setup-plt: Post-Installing MrEd
setup-plt: Done setting up
setup-plt:
setup-plt: Error during Early Install for sgl (/home/pupeno/plt/collects/sgl)
setup-plt:   make: Failed to make compiled/gl-info.zo; compile-extension: 
command failed
setup-plt: Error during Compiling .zos for Jewel 
(/home/pupeno/plt/collects/games/jewel)
setup-plt:   default-load-handler: cannot open input file: 
"/home/pupeno/plt/collects/sgl/gl-info.ss" (No such file or directory; 
errno=2)
setup-plt: Error during Compiling .zos for Checkers 
(/home/pupeno/plt/collects/games/checkers)
setup-plt:   default-load-handler: cannot open input file: 
"/home/pupeno/plt/collects/sgl/gl-info.ss" (No such file or directory; 
errno=2)
setup-plt: Error during Compiling .zos for Gobblet 
(/home/pupeno/plt/collects/games/gobblet)
setup-plt:   default-load-handler: cannot open input file: 
"/home/pupeno/plt/collects/sgl/gl-info.ss" (No such file or directory; 
errno=2)
setup-plt: Error during Compiling .zos for 3D board game library 
(/home/pupeno/plt/collects/games/gl-board-game)
setup-plt:   default-load-handler: cannot open input file: 
"/home/pupeno/plt/collects/sgl/gl-info.ss" (No such file or directory; 
errno=2)
setup-plt: Error during Compiling .zos for sgl (/home/pupeno/plt/collects/sgl)
setup-plt:   default-load-handler: cannot open input file: 
"/home/pupeno/plt/collects/sgl/gl-info.ss" (No such file or directory; 
errno=2)
install: Errors in compilation process! (1)
make[1]: *** [copy-finish] Error 1
make[1]: Leaving directory `/home/pupeno/src/plt/src'
make: *** [install] Error 2
pupeno at ulab:~/src/plt/src$

Any ideas about what's wrong ?
Thank you.
-- 
Pupeno <pupeno at pupeno.com> (http://pupeno.com)
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