P4rD0nM3: As I tried to advise you yesterday, not only is there no technical support for Joomla 1.0 (from 22 July 2009, in fact) but K 1.0.x is provided only as an end-of-life product to allow users a transitional path from Joomla 1.0.x to Joomla 1.5.x. Aside than that, there is little interest these days for that version or in devising fixes for third-party developed software (like
Community Builder) to interoperate with it. In effect, K 1.0.11 (the last release in the series) is available on an "as-is" basis - it works or it doesn't.
You have discovered one of many unsolved problems associated with K 1.0.11. If you search the forum you will see that people continue to have issues with the login link even to this day [in K 1.5.9]! There have been many topics devoted to the subject of working around some of these issues
Kunena and
CB (see the
Community Builder
category).