Class TAdvOfficePage not found

Steps to reproduce the problem.

  1. Create a new VCL form project.
  2. Drop a TAdvOfficePager component on the form
  3. Save form and projeect and run the application (works fine)
  4. Close the project and reopen it
  5. An error message pops up telling that class TAdvOfficePage cannot be found

Compiled with XE7

Can you please make sure ALL TMS VCL UI Pack packages are installed AND active (checked) in the IDE. Look under: Component / Install Packages. The TMS VCL UI Pack design-time package should be added & active.

Thanks. Indeed one box wasn't checked!