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i am using mysql and as i said i have upgraded from 5.50 to 5.70

after upgrade from 5.50 to 5.70 i'm getting error
Specified cast is not valid.

stack trace:
[InvalidCastException: Specified cast is not valid.]
System.Data.DataTableReader.GetInt32(Int32 ordinal) +185
Devart.Data.Linq.Provider.CaheReader.GetInt32(Int32 i) +37
lambda_method(ExecutionScope , f ) +235
Devart.Data.Linq.Provider.ObjectReader`1.g() +25
Devart.Data.Linq.Provider.ObjectReader`1.b() +9
Devart.Data.Linq.Provider.ObjectReader`1.MoveNext() +96
TmeJobs.BLL.AdminContext.RoleBusinessContext.GetAdminRoleGroupSettings(Admin_user admin) in C:\studiopesec\svn\tme\trunk\bll\Admin\BusinessContext.Role.vb:141
TmeJobs.Web.Admin.Security.SecurityManager.GetRoles(Identity identity) in C:\studiopesec\svn\tme\trunk\TmeJobs.Web\Admin\TmeJobs.Web.Admin.Security.vb:20
Zebra.Web.Security.SecurityManager`1.GetRoles(Identity identity) +169
Zebra.Web.Security.SecurityManager.RegisterIdentitylToContext(Identity identity) +97
TmeJobs.Web.Admin.Security.SecurityManager.RegisterIdentitylToContext(Identity identity) in C:\studiopesec\svn\tme\trunk\TmeJobs.Web\Admin\TmeJobs.Web.Admin.Security.vb:35
Zebra.Web.Security.SecurityManager.Authenticate() +368
Zebra.Web.Security.SecurityHttpModule.AuthenticateRequest(Object sender, EventArgs e) +222
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +80
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +171

i have posted some question through support channel but i have no response till now

tnx,
i have licence for dotConnect for MySQL Professional 5.50.79,
meaning that i should renew, yes?

when will be this fixed for mysql