reference assemblies not found

[hans gerritsen]

When I compile my program the following message in the errorlist appears:
"The reference assemblies for framework ".NETframework Version=V4.0" where not found. To resolve this, install the SDK or Targeting Pack for this framework versjon or retarget to a versjon of the framework for which you have the SDK or Targeting Pack installed. Note that assemblies will be resolved from the Global Assembly Cache (GAC) and will be used in place of reference assemblies. Therefore your assembly may not be correctly targeted for the framework you intend.
File: c:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets Line 847 Column 9"

I use a X T21C-C15 panel.
I did a reinstall of ix2.0 SP1 Build 2.0.463.0 without success
What can I do?

[mark.monroe]

This forum post walks you through re-installing iX Developer. It sounds like you do not have .NET installed, or it is not installed properly. You should follow the above forum post and verify that .NET is installed and that you ran setup.exe to install iX Developer.