Hello Eric,

Yes, I understand about our last conversation. But after investigate the issue deeply, our developer teams thinks that the error correctly come from the level code (Column D is null). Also, my latest changes is different from my previous posts. 

Regards,
Handy

Hello Balachander,

Actually, you need to follow our approaches, not DevForce. We have a similiar code that shows LoadOnDemand App in our ClientUISamples, App.xaml.cs. We ever tested the code along with DevForce and it works fine. Here is the snippet code.

private void DiscoverAvailablePackages()
        {
            UXShell.Current.IsInitializing = true;
            ResourceDownloader downloader = new ResourceDownloader();
            downloader.Downloaded += (o, e) =>
            {
                Stream stream = (Stream)e.Resource;
                XDocument x = XDocument.Load(stream);
                var packages = from package in x.Descendants("ApplicationPackage") select package;
                foreach (XElement package in packages)
                {
                    using (StringWriter writer = new StringWriter())
                    {
                        package.Save(writer);
                        UXShell.Current.Applications.Add(ApplicationPackage.Parse(writer.GetStringBuilder().ToString()));
                        
                    IdeaBlade.Core.Composition.CompositionHost.Add(ApplicationPackage.Source);
                    }
                }
                UXShell.Current.IsInitializing = false;
            };
            downloader.Failed += (o, e) =>
            {
                throw e.Error;
            };
            downloader.Download(new Uri("Applications.packages", UriKind.RelativeOrAbsolute));
        }

Regards,
Handy

Hello,

It's weird. If SL version got registered well, WPF should be too. Please let me know your email address. I will need to ask your detail license key in email contact.

Regards,
Handy

Hello,

I am not able to reproduce the issue in here. Can you also confirm that this also happened in ClientUI5?
As far I checked, the previous issue also has been fixed in 2011R1SP1 installer.

Regards,
Handy

Hello,

The SP1 has been released. You can try our enhancement regarding your issue.

Regards,
Handy