Melloware wrote:Do you want to report the bug there since you have the scenario reproducible?

Melloware wrote: They report that if they don't install MM3 before installing MM4 they get a COM error when I try to add a child treenode. Could it be possibly the COM object for MM4 is missing this certain API call that happens to be in the MM3 COM API? That is why installing 3 before 4 works?

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2011-04-17 16:36:08,726 [ERROR] - (12) - Error filling treenode...
System.InvalidCastException: Unable to cast COM object of type 'SongsDB.SDBApplicationClass' to interface type 'SongsDB.ISDBApplication'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{1FAF02F8-A7D3-41F1-9210-A3B12046F136}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
   at SongsDB.SDBApplicationClass.get_MainTree()
   at Melloware.MonkeyTunes.MonkeyTunesServer.CJynqUKX3h8mBRSYKJY(Object )
   at Melloware.MonkeyTunes.MonkeyTunesServer.Un2KIghXy(SDBTreeNode )

Here is the code where I fill the treenode:

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/// <summary>
        /// Event fired when the MonkeyTunes + is clicked on to expand the treeview.
        /// </summary>
        /// <param name="node">the node to fill the children for</param>
        void MediaMonkey_OnFillChildren(SDBTreeNode node) {
        	try {
        		LOG.Info("MonkeyTunes Filling Treenode");
        		SDBTree tree = this.MediaMonkey.MainTree;

        		// delete all old children
        		node.HasChildren = false;

        		foreach (KeyValuePair<string, NetService> pair in PairingServer.Services) {
        			string deviceName;
        			NetService service = pair.Value;
        			try {
        				byte[] txt = service.TXTRecordData;
        				IDictionary dict = NetService.DictionaryFromTXTRecordData(txt);
        				byte[] value = (byte[])dict["DvNm"];
        				deviceName = Encoding.UTF8.GetString(value);

        			} catch (Exception) {
        				deviceName = "Unknown Device";
        			}
        			LOG.InfoFormat("TreeNode Device Name = {0}", deviceName);
        			SDBTreeNode deviceNode = tree.CreateNode;
        			deviceNode.Caption = deviceName;
        			deviceNode.CustomData = service.Name;
        			deviceNode.IconIndex = 54;
        			deviceNode.OnNodeFocused += new ISDBTreeNodeEvents_OnNodeFocusedEventHandler(MediaMonkey_OnNodeFocused);
        			tree.AddNode(node, deviceNode, EnumTreeNodePos.NodePos_AddChildLast);
        		}
        		node.Expanded = true;
        		LOG.Info("MonkeyTunes Filled Treenode successfully");
        	} catch (Exception ex) {
        		LOG.Error("Error filling treenode...", ex);
        	}
        }

Melloware wrote:Another user has confirmed this. A clean MM4 install on Win 7 64 bit the COM object fails. If they install MM3 then MM4 all works...

http://forum.melloware.com/viewtopic.ph ... 294#p25293

Melloware wrote:Yes that is what I am doing but what is really interesting is I am using the COM object fine and it only fails when calling the above method. Meaning other SDB calls are working fine so the COM object is there it is just when adding this child node it throws this error. Then when users install MM3 and then MM4 this error is corrected.

It is very strange.

I am actually passing the running COM object into my application through VBS like this.... So I create my COM .NET app and then pass the SDB instance into it. This is the only way in C# to catch the OnPlay, OnStop, events.

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Set monkeytunes = CreateObject("Melloware.MonkeyTunes.MonkeyTunesServer")
monkeytunes.Init(SDB)

jmcc wrote:I had exactly the same thing - the way that I got round it was to install MM3 first and then do an "over the top" upgrade to MM4. Worked immediately after that.

2011-04-17 16:55:18,537 [ERROR] - (9) - Error filling treenode...
System.InvalidCastException: Unable to cast COM object of type 'SongsDB.SDBApplicationClass' to interface type 'SongsDB.ISDBApplication'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{1FAF02F8-A7D3-41F1-9210-A3B12046F136}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
at SongsDB.SDBApplicationClass.get_MainTree()
at Melloware.MonkeyTunes.MonkeyTunesServer.CJynqUKX3h8mBRSYKJY(Object )
at Melloware.MonkeyTunes.MonkeyTunesServer.Un2KIghXy(SDBTreeNode )

Solution: It looks like somehow your MM COM object on installation has failed to properly install.

1) Uninstall MonkeyTunes using the uninstaller

2) Unisntall MediaMonkey using Windows add/remove

3) Run Piriform CCleaner 3 times. Apparently even after the first cleanup it was still able to locate uncleaned items. After 3 cycles it appeared all clean

4) Deleted all the /MediaMonkey directories under C:\Users\USER\AppData\Roaming\MediaMonkey and under C:\Program Files\MediaMonkey

5) Install MediaMonkey by right clicking the installer and choosing "Run As Administrator". At the end of the Installation when it asks "Launch MediaMonkey Now?" say YES. You probably said NO the last time which is how this happened.

6) Run MediaMonkey once. You may have to run it once and then run it once as Administrator. Then close MediaMonkey. This is a strange but important step to install the MM com object.

7) Install MonkeyTunes latest version

Run MediaMonkey. It should work.