While installing Geeklog 1.3.5 I get the following message (after Step 2 : Geeklog Database Settings) : 1121: Column 'ug_grp_id' is used with UNIQUE or INDEX but is not defined as NOT NULL How can I fix it? Because of this "error" message, I'm unable to install geeklog. Thanks in advance!

It seems you are running an older version of MySQL (something like 3.22, I assume). Please check out this story for a workaround.

bye, Dirk