Unabel to create user

hello im reciving a error when trying to create new users under FBA User Management

In the log i can see the following, but dosent make mutche sence to me, any ideas are welcome.....

 

09/16/2011 09:11:18.82            w3wp.exe (0x171C)                                               0x16E4               SharePoint Foundation           Logging Correlation Data                        xmnv                  Medium            Name=Request (POST:http://site:80/_layouts/FBA/Management/UserNew.aspx)                03ef79d8-283c-4e55-bd53-7b8ad4aa0791

09/16/2011 09:11:18.84            w3wp.exe (0x171C)                                               0x16E4               SharePoint Foundation           Logging Correlation Data                        xmnv                  Medium            Site=/                 03ef79d8-283c-4e55-bd53-7b8ad4aa0791

09/16/2011 09:11:18.87            w3wp.exe (0x171C)                                               0x16E4               SharePoint Foundation                                      Monitoring                                   b4ly                    Medium            Leaving Monitored Scope (Request (POST:http://SITE:80/_layouts/FBA/Management/UserNew.aspx)). Execution Time=38.705949331542                             03ef79d8-283c-4e55-bd53-7b8ad4aa0791

Those aren't error messages in the log file.  What do you see on screen when you get this error? When do you get the error, when you open the new user page or when you click OK on the new user page? Does everything else work ok? (Can you edit users, add roles, delete roles...)

sorry for the poorly description ill try to explain it abit better this time..

i can create and delete roles, edit and delete users.

But when creating a new user, i fill out the form and press "ok" and is hit by a "Object reference not set to an instance of an object" with a col. id the above is the Instant of that col.  id

hmm i think i have FUBARed the installation.. 

starting all over.. :-D hopefully, i have missed somthing when setting up FBA......