Have you tried just deleting/renaming ~.Xauthority and restarting X.
I am attempting to use the knx-installer on a Kanotix remaster. Not only that but I've also nuked all of KDE. Instead I wish to use GDM. The installation actually works fine and from run level 3 user can issue startxfce4 and away it goes and works like a dream. If however one attempts to use ANY login manager including kdm, gdm or xdm I get the dreaded Xlib: Invalid MIT-MAGIC-COOKIE-1 key in .xsession-errors. I don't *think* it's an installer issue but rather .Xauthority but then again if I were sure I would fix it right? Anyway...I don't know too much about how the xserver permissions work. Thanks for any ideas.
Have you tried just deleting/renaming ~.Xauthority and restarting X.
Electric Vacuum Cleaner Air Duster Suction High Pressure for Computer Car Home
$9.97
Electric Mini Air Duster Blower Vacuum Cleaner for PC Computer Laptop Dust
$30.95
Electric Vacuum Cleaner Air Duster Suction High Pressure for Computer Car Home
$10.87
Compressed Air Duster with Air Blower 100000RPM Vacuum Cleaner and Air Duster
$38.99
Mini Computer Vacuum USB Keyboard Cleaner PC Laptop Brush Dust Cleaning Kit US
$13.68
Electric Mini Cordless Air Duster Blower Vacuum Cleaner for Computer/CarCleaning
$17.58
2-In-1 Air Duster & Vacuum 60000 RPM Rechargeable Auto Computer Keyboard USB
$26.95
Electric Mini Air Duster Blower Vacuum Cleaner for PC Computer Laptop Dust
$29.99
KLIM Cool Laptop Cooler Fan, Portable Quiet Cooling Vacuum w/Display - BLUE LED
$15.95
Handheld Vacuum 16000pa, Strong Powerful Mini Car Cleaner, Dust Busters Cordl...
$75.99