We are using VintaSoftImaging.NET v8.1 SDK (with a site licences for Desktops - Standard Edition - i.e. without WPF).
As it's installed on my PC, I have found a "web demo" in C:\Program Files (x86)\VintaSoft\VintaSoftImaging.NET v8.1\Examples\VS.NET.2012\CSharp\WebAnnotationDemo
I would like to run it to evaluate the Web version of your controls. But I have various issues.
I had first to reconfigure it to run on my Local IIS (instead of IS Express) and with my credentials on the Application Pool, otherwise, the demo failed to create temp folders (due to accesses denied).
Do you confirm that this is the expected configuration to be made o run the demo ? Anything else to be customized on the website ?
Next, I get now errors because the SDK tries to open the "Trial" Popup. It is failing as the SDK runs in non-interactive mode (within IIS)

The error logged in the event log looks like this:
Message: An unhandled exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll
Additional information: Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application.
at System.Windows.Forms.Form.ShowDialog(System.Windows.Forms.IWin32Window)
at Vintasoft.Imaging.VintasoftLicenseProvider._(System.Object)
at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()
Could you tell how I am assumed to run the demo to avoid that issue ?