Why can't I link in Simulink to DOORS?

Dear Support, In Simulink the function to link to DOORS does not work any more. I can open the existing links, but the linking options are inactive or disappeared. The versions: MATLAB R2014b (8.4.0.150421), DOORS 9.6. I have already seen and tried the followings: http://de.mathworks.com/help/slvnv/ug/configure-rmi-for-ibm-rational-doors-or-microsoft-activex-navigation.html?searchHighlight=register%20activex, http://de.mathworks.com/matlabcentral/answers/92711-why-does-the-requirements-management-interface-in-simulink-verification-and-validation-not-display-a . In the registry it seems to be OK, the rmi setup says the process is succeeded, I have also tried the manual installation, and to start DOORS and MATLAB in administrator mode in different configurations (both, only one of them) and I have also tried after reinstall DOORS. It was worked before and as I know nothing has changed, still Windows update is possible. Thank you for your help in advance! Best regards, Bendegúz Bartha

[Artem]

Bendaguz, My apologies for not noticing your question for such a long time. If you are still having this issue, I can try to help if you provide a little bit more information: * Are you able to create links to other document types, for example, can you successfully use the "Link to Selection in Word" shortcut in the context menu for a Simulink object? * You wrote "linking options are inactive or disabled". Can you please specify which options? How exactly are you trying to link?

Artem