Hello,

I am a newbie at creating modules. I am using the CodeEndeavors templates in VS2010 to create a test module. When I install it, I am getting a Could Not Load Type... error as below. It is complaining about a Parameter of Type cannot be null. Anyone know what this means? I know most say this is because it can't find the .dll, but I have confirmed the .dll is in the DNN bin directory and it is the correct version based on timestamp.

Any pointers or help is much appreciated. Thanks! Chad

AssemblyVersion: 5.5.1
PortalID: 0
PortalName: TheDynoRoom.com
UserID: -1
UserName:
ActiveTabID: 55
ActiveTabName: Log Viewer
RawURL: /dynodnn/Admin/LogViewer.aspx
AbsoluteURL: /DynoDNN/Default.aspx
AbsoluteURLReferrer: http://localhost/dynodnn/Host/Module%20Definitions/tabid/18/ctl/Install/rtab/18/portalid/0/Default.aspx
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.2) Gecko/20100316 Firefox/3.6.2 ( .NET CLR 3.5.30729; .NET4.0E)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: a6d6333c-0b20-4df4-9738-c1628f09a4e8
InnerException: Could not load type 'Incite.Modules.Dyno_Garage.Dyno_GarageController'.
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Web.Compilation.BuildManager.GetType
StackTrace:
Message: System.Web.HttpException: Could not load type 'Incite.Modules.Dyno_Garage.Dyno_GarageController'. at System.Web.Compilation.BuildManager.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase) at DotNetNuke.Framework.Reflection.CreateType(String TypeName, String CacheKey, Boolean UseCache, Boolean IgnoreErrors)
Source:
Server Name: CRICHARDSONV

AssemblyVersion: 5.5.1
PortalID: 0
PortalName: TheDynoRoom.com
UserID: -1
UserName:
ActiveTabID: 55
ActiveTabName: Log Viewer
RawURL: /dynodnn/Admin/LogViewer.aspx
AbsoluteURL: /DynoDNN/Default.aspx
AbsoluteURLReferrer: http://localhost/dynodnn/Host/Module%20Definitions/tabid/18/ctl/Install/rtab/18/portalid/0/Default.aspx
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.2) Gecko/20100316 Firefox/3.6.2 ( .NET CLR 3.5.30729; .NET4.0E)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: f411db36-fa4a-45f1-94f4-22f3ffa31168
InnerException: Value cannot be null. Parameter name: type
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Activator.CreateInstance
StackTrace:
Message: System.ArgumentNullException: Value cannot be null. Parameter name: type at System.Activator.CreateInstance(Type type, Boolean nonPublic) at DotNetNuke.Entities.Modules.EventMessageProcessor.UpgradeModule(EventMessage message)
Source:
Server Name: CRICHARDSONV

My .dnn Manifest is as follows:
<dotnetnuke version="3.0" type="Module">
  <folders>
    <folder>
      <name>Incite - The Dyno Room</name>
      <friendlyname>Incite - The Dyno Room</friendlyname>
      <foldername>TheDynoRoom</foldername>
      <modulename>Incite - The Dyno Room</modulename>
      <description>The Dyno Room module description</description>
      <dependencies>DotNetNuke.UI.Utilities.ControlMethodAttribute</dependencies>
        <businesscontrollerclass>Incite.Modules.Dyno_Garage.Dyno_GarageController</businesscontrollerclass>
        <businesscontrollerclassOLD>Incite.Modules.TheDynoRoom.TheDynoRoomController</businesscontrollerclassOLD>
      <modules>
        <module>
          <friendlyname>My Garage</friendlyname>
          <cachetime>0</cachetime>
          <controls>
            <control>
              <src>DesktopModules/TheDynoRoom/MyGarage2.ascx</src>
              <type>View</type>
              <helpurl></helpurl>
              <supportspartialrendering>true</supportspartialrendering>
            </control>
          </controls>
        </module>
      </modules>
        <modules>
            <module>
                <friendlyname>Dyno Search</friendlyname>
                <cachetime>0</cachetime>
                <controls>
                    <control>
                        <src>DesktopModules/TheDynoRoom/ViewDyno_Garage.ascx</src>
                        <type>View</type>
                        <helpurl></helpurl>
                        <supportspartialrendering>true</supportspartialrendering>

                    </control>
                    <control>
                        <key>Edit</key>
                        <title>Edit Content</title>
                        <src>DesktopModules/TheDynoRoom/EditDyno_Garage.ascx</src>
                        <type>Edit</type>
                        <helpurl></helpurl>
                    </control>
                    <control>
                        <key>Settings</key>
                        <title>Settings</title>
                        <src>DesktopModules/Dyno_Garage/EditDyno_Garage.ascx</src>
                        <type>Edit</type>
                        <helpurl></helpurl>
                    </control>
                </controls>
            </module>
        </modules>
      <files>
        <file>
            <name>Incite.TheDynoRoom.dll</name>
          </file>
        <file>
          <name>ShowPicture.aspx</name>
        </file>
          <file>
              <name>MyGarage2.ascx</name>
          </file>
        <file>
          <name>ViewDyno_Garage.ascx</name>
        </file>
        <file>
          <name>ViewDyno_Garage.ascx.js</name>
        </file>
        <file>
          <name>EditDyno_Garage.ascx</name>
        </file>
        <file>
          <name>EditDyno_Garage.ascx.js</name>
        </file>
        <file>
          <path>App_LocalResources</path>
          <name>ViewDyno_Garage.ascx.resx</name>
        </file>
        <file>
          <path>App_LocalResources</path>
          <name>EditDyno_Garage.ascx.resx</name>
        </file>
        <file>
          <name>module.css</name>
        </file>
        <file>
          <name>ajaxanim.gif</name>
        </file>
        <file>
          <name>01.00.00.SqlDataProvider</name>
        </file>
        <file>
          <name>Uninstall.SqlDataProvider</name>
        </file>
      </files>
    </folder>
  </folders>
</dotnetnuke>

This appears to be a namespace mis-match between that specified in the manifest's <businesscontrollerclass> element (Incite.Modules.Dyno_Garage.Dyno_GarageController) and the actual namespace of the assembly contained in the file Incite.TheDynoRoom.dll. The second error log message is the key one as it indicates the error is being thrown as an attempt is made to create an instance of the business controller class during installation in support of the module's implementation of IUpgradable interface.

My guess is that you started with a namespace of Incite.Modules.TheDynoRoom then changed it to Incite.Modules.Dyno_Garage and/or changed the name of the controller class from TheDynoRoomController to Dyno_GarageController but did not change the name of the assembly to match. I also noticed that you are placing module controls in two child folders - TheDynoRoom and Dyno_Garage under DesktopModules while the module folder is specified as TheDynoRoom. Although that is not the cause of this issue, it will likely cause other issues, particularly when uninstalling the module.

Finally, I would recommend that you look into using the version 5 manifest format rather than the version 3.0 that you have used unless you must support installing your module on DotNetNuke 4.x sites. If that is the case, don't forget that you must compile your module against the LOWEST DotNetNuke version you will be supporting.

---

Bill, WESNet Designs
Team Lead - DotNetNuke Gallery Module Project (Not Actively Being Developed)
Extensions Forge Projects . . .
Current: UserExport, ContentDeJour, ePrayer, DNN NewsTicker, By Invitation
Coming Soon: FRBO-For Rent By Owner

Oh, and the Root Name Space is blank...for what it's worth.