Could not load file or assembly 'MySql.Web, Version=6.7.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' or one of its dependencies

Hi,

I wrote a web site in asp.net with memebership ,I used SQl SERVER for my web site, when I uploaded website to my host , unfortunately it didn't work.

it say :  Could not load file or assembly 'MySql.Web, Version=6.7.4.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d' or one of its dependencies

but I never used any mysql in entire my project ,

and finally I can't access machine.config in my host ,this happen only when the user wants to login ,other parts of my web site work well and read from database without any problem.

this is my essential part of mywebsite :

<membership defaultProvider="AspNetSqlMembershipProvider"><providers><clear /><add name="AspNetSqlMembershipProvider" connectionStringName="LocalSqlServer" applicationName="/" minRequiredPasswordLength="6" minRequiredNonalphanumericCharacters="0" requiresQuestionAndAnswer="true" passwordFormat="Hashed" type="System.Web.Security.SqlMembershipProvider" /></providers></membership><!--Profile--><profile><properties><clear /><add name="level" /><add name="lastword" /><add name="section" /></properties></profile>

sorry, I'm not professional , please answer me completely.  

thanks