c# - Can't add user to role with SimpleMembership (MySQL) -

i'm trying use simplemembership mysql in code first project. initializer made:

        websecurity.initializedatabaseconnection("myconnectionstringname", "userprofile", "userid", "username", false);          if (!roles.roleexists("employee"))         {             roles.createrole("employee");         }          if (!websecurity.userexists("kurt"))         {             websecurity.createuserandaccount("kurt", "test");             roles.addusertorole("kurt", "employee");         } 

the following exception appears "addusertorole":

an exception of type 'system.invalidoperationexception' occurred in mysql.web.dll not handled in user code

additional information: usertablename configuration not initialized.

the user added table "userprofile" (and "webpages_membership") , role "webpages_roles". "webpages_usersinroles" empty.

the providers in web.config (for simplemembership mysql):

    <membership defaultprovider="mysqlsimplemembershipprovider">         <providers>             <clear />             <add name="mysqlsimplemembershipprovider" type="mysql.web.security.mysqlsimplemembershipprovider,mysql.web,version=6.9.6.0,culture=neutral,publickeytoken=c5687fc88969c44d" applicationname="/" description="mysqldefaultapplication" connectionstringname="myconnectionstringname" usertablename="userprofile" useridcolumn="userid" usernamecolumn="username" autogeneratetables="true" />         </providers>     </membership>     <rolemanager enabled="true" defaultprovider="mysqlsimpleroleprovider">         <providers>             <clear />             <add name="mysqlsimpleroleprovider" type="mysql.web.security.mysqlsimpleroleprovider, mysql.web, version=6.9.6.0, culture=neutral, publickeytoken=c5687fc88969c44d" connectionstringname="myconnectionstringname" applicationname="/" />         </providers>     </rolemanager> 

does know configuration isn't right here? it's strange because other things (creating users , roles) working fine without exceptions.

thanks in advance!

update

i have added attributes membershipprovider rolemanager.

    <rolemanager defaultprovider="mysqlsimpleroleprovider">         <providers>             <clear />             <add name="mysqlsimpleroleprovider" type="mysql.web.security.mysqlsimpleroleprovider, mysql.web, version=6.9.6.0, culture=neutral, publickeytoken=c5687fc88969c44d" connectionstringname="samandarservice_db" applicationname="samandarservice" usertablename="userprofile" useridcolumn="userid" usernamecolumn="name" />         </providers>     </rolemanager> 

another exception shows now:

cannot add or update child row: foreign key constraint fails (ticket.webpages_usersinroles, constraint fk_roleid foreign key (roleid) references webpages_roles (roleid))

the role correctly added roles table, mysql can't reference because of mysterious reason.

how fix issue?