There is no such mistake. Moreover, as I wrote above, I tried using materials "cable 1" and "cable 2" from a sample project and it didn't help. It seems there is another type of problem. This error only happens when inactivity for reinforcement is defined.

Regards.

First of all, you defined initial material activity at 3rd interval in material properties and you assigned Reinforcement Inactivity for the same bars in the same interval 3. I tried to change Reinf Inacctivity to interval 4 and still it gives error at interval 4 when reinf inactivity should act.

Also I strongly recommend you not to use space in names of GiD projects. I remember that it caused some problems in my past projects.

I tried even directly copying materials from sample model BondCabel_Injected and applying those materials to your model but it doesn't help. I still get this error at the step when Reinf Inactivity is active:

(Thread 1) CCInpFExc: Syntax error reading ATENA input, line: 2864, file: D:\Documents\ATENA\DLM\Test_PO2_change_section.gid\AtenaCalculation\Test_PO2_change_section.inp, data being processed:
 4.7826e-03  2.2500e-02  
Source line: 244, file: ..\..\Sources\CCFunction\CCMultiLinearFunction\CCMultiLinearFunction_Misc.cpp, last modified at: Thu Nov 19 15:59:32 2015

I think that it's better developers have a look at your model.