Missing "url" file in linux-source-2.6.37.tazpkg revision 2011-03-12 in folder /usr/src/kernel-patches/slitaz/ if you loking in shell script "get-linux-source" in /usr/bin/ directory with geany on line:8 >>> "url=$(cat /usr/src/kernel-patches/slitaz/url)"

You can fix that with writing this file and add:

http://www.eu.kernel.org/pub/linux/kernel/v2.6/linux-2.6.37.tar.bz2

and save to >>> url <<< file in /usr/src/kernel-patches/slitaz/ directory.