i have same problem
i try install a trial versiono of ASD 2013 (no have insert SN code), and i find the same message "license exioperd"
i have Revit Structure Suite 2013 (revit struucture + ASD) with subscription
on the same pc i have ASD 2012 permanent active, when i install ASD 2013 the activation of 2012 version fail ....
I think that the problem is in the control file of the license is corrupt as I do not know how to fix it or replace it
you have an idea to resolve this problem?
thanks