I am using DNN 3.3.7.

I succesfully installed  the "Reports" module, but I get the error below when trying to add the module to a Page:

ModuleId: 395
ModuleDefId: 127
FriendlyName: Reports
ModuleControlSource: DesktopModules/Reports/ViewReports.ascx
AssemblyVersion: 03.03.07
PortalID: 1
PortalName: PHpanhuis portal
UserID: 1
UserName: host
ActiveTabID: 70
ActiveTabName: PHpanhuis rapporten
RawURL: /dotnetnuke/phpanhuis/PHpanhuisrapporten/tabid/70/Default.aspx
AbsoluteURL: /DotNetNuke/Default.aspx
AbsoluteURLReferrer: http://localhost/dotnetnuke/phpanhuis/PHpanhuisrapporten/tabid/70/Default.aspx
UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 9cfb573c-5923-458f-b481-6b3c370cdd63
InnerException: Parser Error: Could not load type 'DotNetNuke.Modules.Reports.ViewReports'.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Web.UI.TemplateParser.GetType
StackTrace:
Message: DotNetNuke.Services.Exceptions.ModuleLoadException: Parser Error: Could not load type 'DotNetNuke.Modules.Reports.ViewReports'. ---> System.Web.HttpParseException: Parser Error: Could not load type 'DotNetNuke.Modules.Reports.ViewReports'. ---> System.Web.HttpException: Could not load type 'DotNetNuke.Modules.Reports.ViewReports'. at System.Web.UI.TemplateParser.GetType(String typeName, Boolean ignoreCase) at System.Web.UI.TemplateParser.ProcessMainDirective(IDictionary mainDirective) at System.Web.UI.TemplateControlParser.ProcessMainDirective(IDictionary mainDirective) at System.Web.UI.TemplateParser.ProcessDirective(String directiveName, IDictionary directive) at System.Web.UI.TemplateControlParser.ProcessDirective(String directiveName, IDictionary directive) at System.Web.UI.TemplateParser.ParseStringInternal(String text) at System.Web.UI.TemplateParser.ParseString(String text, String virtualPath, String basePhysicalDir) --- End of inner exception stack trace --- at System.Web.UI.TemplateParser.ParseString(String text, String virtualPath, String basePhysicalDir) at System.Web.UI.TemplateParser.ParseFile(String filename, String virtualPath) at System.Web.UI.TemplateParser.Parse() at System.Web.UI.TemplateParser.GetParserCacheItemThroughCompilation() at System.Web.UI.TemplateParser.GetParserCacheItemInternal(Boolean fCreateIfNotFound) at System.Web.UI.TemplateParser.GetParserCacheItemWithNewConfigPath() at System.Web.UI.TemplateParser.GetParserCacheItem() at System.Web.UI.TemplateControlParser.CompileAndGetParserCacheItem(String virtualPath, String inputFile, HttpContext context) at System.Web.UI.TemplateControlParser.GetCompiledType(String virtualPath, String inputFile, HttpContext context) at System.Web.UI.UserControlParser.GetCompiledUserControlType(String virtualPath, String inputFile, HttpContext context) at System.Web.UI.TemplateControl.LoadControl(String virtualPath) at DotNetNuke.UI.Skins.Skin.InjectModule(Control objPane, ModuleInfo objModule, PortalSettings PortalSettings) in E:\Inetpub\wwwroot\DotNetNuke\admin\Skins\Skin.vb:line 468 --- End of inner exception stack trace ---

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The DNN database tables seems to be OK. 

In the past I have seen the error when developing a module by my own and adding this to a page. 
To solve that I deleted the module (sometimes I had to delete rows in the module tables of the DNN database) and I created a new module definition.

My questions:

1. Is this a DNN 3.3.7 bug.

1.  
2. How can I solve this?