Setup TMS VCL UI Pack

VCL TMS VCL UI Pack
1

On my machine there is Delphi 10.3 and Delphi 10.4 running.


Yesterday I installed the latest version of TMS VCL UI Pack for both installations of Delphi. 

Loading an application for developping in Delphi 10.4, I get the message, that following components are missing:
TADVPolypage
TADVPage
TADVQuickAccesstoolbar
TADVOfficepage

Loading the same application in Delphi 10.3, the components exists.
What to do?
2

Verify that all (5) TMS VCL UI Pack packages are effectively installed (listed) and active (checked) under Component / Install Packages

3

Thank you for your answer. The package TMS VCL UI Design Time support was not active.

Now it works.