I know the subject sounds similar to other postings, but I searched and didn't find the same issue anywhere in the forums.  My DNN 4.8.0 site has been up for about 2 months and about every 2 or 3 weeks, all the Text/HTML module show 'unavailable'.  I've had to restart IIS to clear it, which my host (Mosso) won't do anymore.  All errored modules have the message shown below. I appreciate any help someone can give me. I'm a programmer, but a  DNN newbie and I was hoping to avoid digging into the code for now. I think the host is running on II7 with SQL Server 2005. Thanks.

Error: MyModule is currently unavailable.
DotNetNuke.Services.Exceptions.ModuleLoadException: The type initializer for 'DotNetNuke.Modules.HTML.DataProvider' threw an exception. ---> System.TypeInitializationException: The type initializer for 'DotNetNuke.Modules.HTML.DataProvider' threw an exception. ---> System.InvalidCastException: Unable to cast object of type 'DotNetNuke.Modules.HTML.SqlDataProvider' to type 'DotNetNuke.Modules.HTML.DataProvider'. at DotNetNuke.Modules.HTML.DataProvider.CreateProvider() at DotNetNuke.Modules.HTML.DataProvider..cctor() --- End of inner exception stack trace --- at DotNetNuke.Modules.HTML.HtmlTextController.GetHtmlText(Int32 moduleId) at DotNetNuke.Modules.Html.HtmlModule.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---

i'm having the same issue but im running on 4.7...any guess on what could be wrong in the configuration??

thanks

Any updates on this problem and how/whether it was solved?  I'm experiencing the same thing on DNN 4.8.4.  The site worked fine, now it doesn't.