I've updated five modules by following the module upgrade wizard document so I can use the App_Code directory rather than using a pre-compiled dll.  On the exterior all seems to be well, but I get a series of exceptions in the log.  The first exception is a System.IO.FileNotFoundException.  It can't find the file name 'DotNetNuke.Modules.Html' at System.RuntimeTypeHandle._GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, Boolean loadTypeFromPartialName) at System.RuntimTypeHandle.GetTypeByName(String nam, Boolean throwOnError, Boolean ignoreCase, Booean reflectionOnly, StackCrawlMark& stackMark) etc. and it keeps going on into a nice stack trace.  The line of code that is causeing the exception is line 241 of Library\Components\Framework\Reflection.vb.  This is what is on that line of code 

objType = BuildManager.GetType(TypeName, True, True).  Because this is returning nothing, it is causing a null pointer exception further down the line.  This did not happen before I did the module upgrade, I believe it is because it is looking for the dll in the bin folder which is no longer there.  I get the same exception for every module that I have converted/upgraded. Has anybody run into this, or know a way around it, I can't have all these exceptions occuring everytime the site gets a hit.

Thanks for the quick response. I found that fix in another forum, and applied it to the CreateProvider() method in the DataProvider.vb file for each module that I converted.  Are there more places that I should make that change?  Also, I noticed something that is extremely odd, it doesn't throw the series of exception every time, it seems to happen when there is nothing in the cache.  Also, I noticed that it is pulling the data that is being passed into the BuildManager.GetType() (Reflections.vb line 241) method call from the database.   The value looks something like this: "DotNetNuke.Modules.Html.HtmlController, DotNetNuke.Modules.Html".