Seismosoft | Earthquake Engineering Solutions

So how can i ask the program to feel the concrete crushing strain in the stress strain curve , since the performance criteria only make a notifacation to the concrete crushing strain.

I put a collapse strain in the material class and then I wanted to activate it in the settings, but when doing this I found the box closed (I can't activate or unactivate it). What can I do ?
Thanks alot

<t>I have a problem when using the link modelling to model a vertical shear link having two springs( one rotational and one translational).<br/>
The program asks about the six degrees of freedom (F1,F2,F3,M1,M2,M3). In my case I put the values of the stiffness of F1,F2,M1,M3 big values and used the ...

My operating system is windows vista , I installed the seismostruct program and when i`m trying to open it a pop-up window appeared saying windows cannot open the path ,you may not have appropriate permisions to access.
So what does this mean and how can i deal with it.