mvc3 custom role provider error on Web.Config

I'm trying to figure this out for a few day now, i have custom membership and role providers for my project and it works perfectly on my dev machine, but on production it throws the following error for the web.config

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Exception has been thrown by the target of an invocation.

Source Error:

Line 24: <providers>
Line 25:         <clear />
Line 26:         <add name="FeelSafeRoleProvider" type="FeelSafe.Helpers.FeelSafeRoleProvider, FeelSafe" connectionStringName="FeelSafeEntities" />
Line 27:       </providers>
Line 28:     </roleManager>

Source File: (...)\web.config Line: 26

I've read about people having simmilar issues because they hadn't named their connectionstrings but my connectionstring is defined as follows

<connectionStrings>
<add name="FeelSafeEntities" connectionString="metadata=res://*/Models.FeelSafe.csdl|res://*/Models.FeelSafe.ssdl|res://*/Models.FeelSafe.msl;provider=System.Data.SqlClient;provider connection string=&quot;Data Source=PLESK-23\SQLEXPRESS;Initial Catalog=FeelSafe;Persist Security Info=True;User ID={user};Password={password};MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" />
</connectionStrings>

any toughts on what's going on here? if you need any more info just ask and i'll provide.

thanks for any help

Solution

OK, found out that the problem wasn't directly with the role provider classes nor the connectionstring, the version of the MySQL connector was old, updating it solved this error.