Hello Teller ,

Thank you for posting in our forum.

You can try using the upgrade utility to upgrade your application: http://help.infragistics.com/NetAdvantage/ASPNET/2011.1/CLR4.0/?page=Web_Using_Version_Upgrade_Utility.html

If you cannot upgrade your project using Version Upgrade Utility you can upgrade your project manually by following these steps:

1.     Get a copy of your project that you have not modified with Version Utility

2.     Make a backup copy of your project

3.     Replace all old assemblies in the Bin folder with the new

4.     Open your project with Visual Studio and press Ctrl+H (Quick Replace)

Enter the following Values:

Find what:  .v9.x Version=9.x.200xx.xxxx  This should be your current version of ver.9.x , you will need to change it.

Replace with:  .v11.1, Version=11.1.20111.2238 (This is the current version)

Look in: Entire Solution Select Entire Solutions to change all existing references in your project

                        Click on the “Replace All” button

Please note that it is very important to enter the exact versions

5.     Create a new empty project or website and drag any control from ver 11.1. A  new ig_res folder will be generated in the project. Copy this folder to your project if there is such folder then overwrite it.

6.     Remove licenses.licx and App_Licenses.dll the should be located in:

C:\...\YourPoject:\licenses.licx

C:\...\YourPoject:\Bin\App_licenses.dll

7.     Clean and rebuild your project.

Best Regards,

Maya Kirova

Developer Support Engineer II

Infragistics, Inc.

http://ko.infragistics.com/support