Why do I receive Error message while running demos in Aerospace Blockset 3.9 (R2012a)

I am using some of the block from Aerospace Toolset and the block input and output names are missing. Rather than displaying the block name, it shows "???".

I tried running the aeroblk_hl20_vr demo and it gave me the following error message:

 Fail to Initialize.

When I try to locate one of the demo files, I have the following output.

>>which -all aeroicon

C:\MATLAB\R2011a\toolbox\aeroblks\aeroblks\aeroicon.m  % Has no license available

Answer 1

[MathWorks Support Team]

A product license is required to run demos and use blocks for Aerospace Blockset.

Please confirm that the following output has Aerospace Blockset

>>ver

If one has the product available in his/her license, please try activating it via

Help->Licensing->Activate a product