Originally Posted by Dart
Nope....if you do that you not only lose your .config (you DID back up your .config right?) But then you get this error because the installer checks for a valid .config:
Yikes, Thanks for pointing out my omission in that suggestion (I typically remove the .config deletion from the makefile). If you do actually keep a copy of the config, and replace it in the source tree after cleaning it.. this problem should disappear.
# cd /usr/src/linux-2.6.3-15mdk
# cp .config /tmp/.config
# make mrproper
# cp /tmp/.config .
# make prepare
And all should be well.