When specifying the license server doing an install or update, an error message text box pop up, stating:
 
The License server at this address is a version that is incompatible with this product
 

 
Choosing view details show the following:

Error Id: XDDS:C95FFD68
 
Exception:
    Citrix.Console.Models.Exceptions.ScriptException The license server at this address is a version that is incompatible with this product.
       at Citrix.Console.PowerShellInteraction.CmdletExecutionMethods.CreateException[T](ICommonLog logger, ExecutionResults`1 results, ICmdletExecutionHost host)
       at Citrix.Console.PowerShellInteraction.CmdletExecutionMethods.Execute[T](ISdkCmdlet`1 sdkCmd, ICmdletExecutionHost host, Boolean allowFailover)
       at Citrix.Console.PowerShellSdk.LicensingService.Scripts.GetWslLocationScript.RunScript()
       at Citrix.Console.PowerShellInteraction.PowerShellScript`1.Run()
       at Citrix.Console.PowerShellSdk.LicensingService.PSLicenseService.GetLicLocation(String licenseServer, LicenseAddressType addressType, ScriptExecutionContext context)
       at Citrix.Console.Licensing.UI.CustomControls.ChangeLicenseServerControlViewModel.<>c__DisplayClass5.<ContactLicenseServer>b__0()
       at Citrix.Console.CommonControls.ViewModelBase.<>c__DisplayClasse.<RunBackgroundTask>b__c(Object s, DoWorkEventArgs e)
   
    DesktopStudio_ErrorId : LSVersionIncompatible
    Sdk Error Message : LSVersionIncompatible
    Sdk Error ID : Citrix.PowerShell.LicensingAdminStatus.LSVersionIncompatible,Citrix.Licensing.Admin.SDK.Commands.GetLicLocationCommand
    ErrorCategory : NotSpecified
    DesktopStudio_PowerShellHistory : Get location of Licensing Service
    9/23/2016 10:37:42 AM
   
    Get-LicLocation  -AddressType "WSL" -LicenseServerAddress "10.10.10.110" -LicenseServerPort 27000
    Get-LicLocation : LSVersionIncompatible
            + CategoryInfo : InvalidOperation: (Get-LicLocation:String) [Get-LicLocation], InvalidOperationException
            + FullyQualifiedErrorId : Citrix.PowerShell.LicensingAdminStatus.LSVersionIncompatible,Citrix.Licensing.Admin.SDK.Commands.GetLicLocationCommand
 

The version of the license server is too old for the version of the XenApp XenDesktop being installed. Update the License Server with the version that came whit XenApp XenDesktop media being used, or a newer version.