Please allow me to assist you with the deployment problem one-by-one. First, let's start with the WebTreeView.

Everyting works fine on my development machine in all browser types (IE11, Chrome, FireFox).

During development phase, does the app (in development machine) uses SmartWebResources or not uses SmartWebResources? If the app in development machine doesn't use SmartWebResources then it would be as simple as xcopy the app to deployment server.

A simple WebSite with unbound WebTreeView is deployed to my IIS 8.5. Below is the settings which related to WebTreeView defined in web.config file.

<configuration>
  <appSettings>
    <add key="ISNet.WebUI.ISRes_Registered" value="false"/>
    <add key="ISNet.WebUI.v3_0_5000.OptimizeCss" value="true" />
    <add key="ISNet.WebUI.v3_0_5000.OptimizeCssName" value="true" />
    <add key="ISNet.WebUI.v3_0_5000.GroupCssStyles" value="true" />
    
    <!-- WebTreeView Settings -->
    <add key="ISNet.WebUI.WebTreeView.v1_0_1500.ImagesDirectory"
         value="~/CommonLibrary/Images/WebTreeView/"/>    
    <add key="ISNet.WebUI.WebTreeView.v1_0_1500.RenderingMode"
         value="HTML5"/>
    <add key="ISNet.WebUI.WebTreeView.v1_0_1500.RuntimeLicenseKey"
         value="RUNTI-MELI-CENSE"/>
    <add key="ISNet.WebUI.WebTreeView.v1_0_1500.ScriptDirectory"
         value="~/CommonLibrary/WebTreeView/V1_0_1500/"/>
    <add key="ISNet.WebUI.WebTreeView.v1_0_1500.SharedScriptDirectory"
         value="~/CommonLibrary/Shared/"/>
    <add key="ISNet.WebUI.WebTreeView.v1_0_1500.EnableWebResources"
         value="Never"/>
  </appSettings>
  ...
</configuration>

Note: the value shown at the above settings may differ/vary according to the configuration of deployment environment.

Please ensure that those settings have been configured properly. You can use the Network tool of IE 11 Developer Tool to determine which js files or images that missing (http404).

1. Where is the WebUI for ASP.Net documentation, where I can read about thes Smart Web Resources, etc.
2. Where do I se if the app (in dev. machine) uses Smart Web Resources or not?
3. disk-space on our server is no issue. Should I prefere using Smart Web Resources or not?

Find attached the results from IE11 Dev. Tool. It seems that when browsing from IE11 the scripts in CommonLibary can't be found...am I right? But why is that happening for IE11 only but not in Chrome and FireFox? ...

So I added all the stuff from your <appSettings> that where missing in mine (all those script directory refs. and EnableWebResources=never). After that the tree view paints correctly but is not sensing the mouse, when hovering over tree view items or trying to expload an item.
In the IE11 Dev Tool I now get this error only:
"SCRIPT438: Object doesn't support property or method 'attachEvent'"
"File: WebTreeView.js, Line: 1, Column: 93893"
We are using .NET framework v4.0.304129 on both dev. machine and deployment server.

PS: If it matter, When I deploy I use "Publish Web site" from Visual Studio 2010 that compiles and copy the website to a "precompiled" folder. I copy the content of that folder to the deployment server. Done so for many years with the app with previous version of WebUI components without any problems at all.

TJ

Regards
TJ

Where is the WebUI for ASP.Net documentation, where I can read about thes Smart Web Resources, etc.

I enclosed a video (SmartWebResourcesDocumentation.zip) as attachment. The video shows how to find SmartWebResources in WebUI Studio for ASP.Net documentation. Please feel free to let me know if you still have any difficulties to find/locate the documentation.

Where do I se if the app (in dev. machine) uses Smart Web Resources or not?

The image below shows WebSite using SmartWebResources.

While this one shows WebSite not using SmartWebResources.

disk-space on our server is no issue. Should I prefere using Smart Web Resources or not?

As best practice, it is highly recommended to enable SmartWebResources feature for all Intersoft's components. This will avoid developers to deals with the complexity in order to deploy their web application. For an instance, the JavaScript files, image, and other runtime client files need to be copied in order for the component to run properly.

Hope this helps.

Ok I switch to SmartWebResources fully:

1. I have copied all the .Resource.dll files to the Bin folder
2. Here is the IS related setup in web.config (on the deployment server)..excluding the Runtime Licens sections of course.

    <add key="ISNet.WebUI.ISRes_Registered" value="true" />    <add key="ISNet.WebUI.v3_0_5000.GroupCssStyles" value="true" />        <add key="ISNet.WebUI.WebTreeView.v1_0_1500.EnableWebResources" value="Always"/>    <add key="ISNet.WebUI.WebAqua.v2_0_1000.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebInput.v4_0_7200.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebTreeView.v1_0_1500.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebTextEditor.v2_0_1000.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebScheduler.v4_0_1000.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebGrid.v9_0_7200.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebEssentials.v3_0_1000.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebDesktop.v4_0_7200.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebCombo.v6_0_7200.EnableWebResources" value="Always"/>

    <add key="ISNet.WebUI.WebDesktop.V4_0_7200.RenderingMode" value="HTML5" />
    <add key="ISNet.WebUI.WebGrid.v9_0_7200.RenderingMode" value="HTML5" />
    <add key="ISNet.WebUI.WebTreeView.v1_0_1500.RenderingMode" value="HTML5" />
    <add key="ISNet.WebUI.WebCombo.v6_0_7200.RenderingMode" value="HTML5" />
    <add key="ISNet.WebUI.WebInput.v4_0_7200.RenderingMode" value="HTML5" />
    
    <add key="ISNet.WebUI.v3_0_5000.OptimizeCss" value="true" />
    <add key="ISNet.WebUI.v3_0_5000.OptimizeCssName" value="true" />
    
    <add key="ISNet.WebUI.WebDesktop.V4_0_2007.XmlCompressionEnabled" value="true" />
    <add key="ISNet.WebUI.WebGrid.V9_0_7200.XmlCompressionEnabled" value="true" />
    <add key="ISNet.WebUI.WebInput.v4_0_7200.XmlCompressionEnabled" value="true" />
    <add key="ISNet.WebUI.WebCombo.v4_0_7200.XmlCompressionEnabled" value="true" />

BUT IE11 does not work. It manages to pass the login screen that actully has a WebDialogBox, but when it enters the page containing the treeview (Profiler.aspx) and web-combos it fails. Se attahced tow debug images. the A-image (NETWORK) doesnt show anything wrong I think. But take a look at B-image (CONSOLE). IE11 doesnt seem to find the individual Javascript functions in the SmartResources, althoug it GETs the .js files successfully. How come?

PS: After I removed compleetly CommonLibrary folder. IE11 stops on the first request to Intersoft resources:
script>InitWebDialogBox('c_wdlgLogin') 'script' is undefined
But Firefox and Chrome still work 100% ok.
So the problem is that IE11 refuses to use the SmartWebResources, while Chrome and Firefox can use them when browsing the same web site. How can that be?

I can send you a login to the system if you provide me with avalid intersoftpt emal address. Then you can test for your self.
Regards
TJ

Please ensure following checklist when deploying WebSite/WebApp which employs Intersoft controls:

1. RuntimeLicenseKey
   This is a key required in order to license the components for deployment purpose in production environment. This one is checked/done based on your post on August 13, 2015 (...excluding the Runtime Licens sections of course)
2. Resource Assembly
   Ensure that you have copied the resources assemblies to your project's bin folder. Example: ISNet.WebUI.WebGrid.Resources.dll; ISNet.WebUI.WebDesktop.Resources.dll.
3. Framework Assembly
   You are required to copy framework assemblies to your project's bin folder. The framework assemblies are: ISNet.dll; ISNet.WebUI.dll; and ISNet.WebUI.Resources.dll.
4. Component Assembly
   Component assembly is required to be copied to your project's bin folder. The component assemblies are: ISNet.WebUI.WebGrid.dll; ISNet.WebUI.WebDesktop.dll; ISNet.WebUI.WebCombo.dll, etc.
5. Feature-specific Assembly
   Exporting, charting feature assembly is required to be copied to your project's bin folder if the WebApplication utilizes these features.
6. Ensure that handlers have been added in <system.webServer> in web.config file.
   For more detail, please check this tutorial article that provides a step-by-step instruction on how to configure Web Site to run in IIS7 (or newer) environment.

1. All runtime licnese keys are set copy/pasted from our licnese.
   
   
2. ISNet.WebUI.WebGrid.Resources.dll version 9.0.7200.1
   ISNet.WebUI.WebDesktop.Resources.dll version 4.0.7200.14
   ISNet.WebUI.WebCombo.Resources.dll version 6.0.7200.260
   ISNet.WebUI.WebInput.Resources.dll version 4.0.7200.253
   
   
3. ISNet.dll version 3.0.5000.914
   ISNet.WebUI.dll version 3.0.5000.914
   ISNet.WebUI.Resources.dll version 3.0.5000.914
   
   
4. ISNet.WebUI.WebGrid.dll version 9.0.7200.1
   ISNet.WebUI.WebDesktop.dll version 4.0.7200.14
   ISNet.WebUI.WebCombo.dll version 6.0.7200.260
   ISNet.WebUI.WebInput.dll version 4.0.7200253
   
   
5. ISNet.ActiveReports.Exporting.dll version 5.0.7200.3
   ISNet.WebUI.WebGrid.ISChartEngine.dll version 9.07200.1
   

    <system.webServer>
    <validation validateIntegratedModeConfiguration="false"/>
    <handlers>
      <add name="ISChart.axd_GET, POST" path="ISChart.axd" verb="GET, POST" type="ISNet.WebUI.WebGrid.Chart.ChartRequestHandler, ISNet.WebUI.WebGrid" preCondition="integratedMode"/>
      <add name="ISRes.axd_GET" path="ISRes.axd" verb="GET" type="ISNet.WebUI.WebResourceHandler, ISNet.WebUI, Version=3.0.5000.1, Culture=neutral, PublicKeyToken=b1f2a8511635667a" preCondition="integratedMode"/>
      <add name="WebFileUploaderHttpHandler.axd_GET" path="WebFileUploaderHttpHandler.axd" verb="GET" type="ISNet.WebUI.WebTextEditor.WebFileUploaderHttpHandler, ISNet.WebUI.WebTextEditor" preCondition="integratedMode"/>
    </handlers>
    <modules>
      <add name="WebFileUploaderHttpModule_GET" preCondition="managedHandler" type="ISNet.WebUI.WebTextEditor.WebFileUploaderHttpModule, ISNet.WebUI.WebTextEditor" />
    </modules>
  </system.webServer>  

 <location path="ISRes.axd">
   <system.web>      <authorization>
        <allow users="*"/>
      </authorization>
    </system.web>
  </location>

I still have some IE11 issues on the deployment server regarding WebFlyPostManager and WebContextMenu,  but I will try to solve those before bugging IntersoftPT tech support any further.

Thank you for all the help.