The model subassemblies do not regenate correctly using the desing study!!
Design study is definitely the way to go.
However the limitation is that you won't be able to go between configurations.
You might be able to setup design studies per configuration and then use the run all command or put each configuration in its own part and use the task scheduler to update the simulations.
Outputting the results could be a challenge if you want that to be done automatically.
Regarding the problem you're having with the design study, have you tried something simple like changing the length of a cantilever beam just to confirm the software is working? Then you can dig into what is wrong with your specific file.
Thanks a lot.
I finally find the solution: the design study regenerates the parts in the order they are in the desing tree. So the part you modify the dimensions has to be in the first position of the tree if you want every part to regenerate.