Dear engmtma, to run an old model in a newer ATENA version, please re-generate the mesh. If you have problems with the mesh generation, please see ATENA Troubleshooting, 3.3.4 Mesh generation errors for some macroelements.and 3.3.5 Problem meshing geometry created in older ATENA versions.

Please see ATENA Troubleshooting, 3.1.3 The analysis stops with the message "Error when saving results External exception E06D7363".

If you still can not identify the problem source, please send us your model along with info about what you are doing, following the instructions from Troubleshooting 2.1.1 I have a problem not listed here.

Hello pritish, please see ATENA Troubleshooting, 2.4.6 Floating point problems - Division by zero, Loss of >7 digits on the matrix diagonal, Warning: Sign of diagonal changed when reducing equation,Floating point exception: Multiple floating points traps, Zero or negative jacobian, InvertA: zero determinant, CCMaterials Extended AExc: CC5ParamYield F:project_stress_on_f_division by zero, and similar. If you still can not identify the problem source, send us the model (see ATENA Troubleshooting, 2.1.1 I have a problem not listed here).

Hello sir,
I am also facing another problem in interpreting the results of reaction and displacement in cyclic loading. Following the ATENA manual and suggestions of how to apply cyclic loading, I created a function of prescribed deformations in +Y and -Y directions. In my initial load step, my column is axially loaded only with 100kN. In my 2nd step, I applied prescribed deformation in -Y direction. In the 3rd step, I unloaded the specimen and finally in the 4th step, I applied prescribed deformation in +Y direction and so on up to 20  steps. I have placed three monitoring points; displacement monitor at the extreme bottom end of the beam, reaction in +y and -y named monitor respectively at the top & bottom of the plate node where prescribed deformation is applied in cyclic manner as explained above.

The bug is, during the running of analysis, the reaction monitors are showing the reactions in multiples of 1000 kNs which is totally unjustifiable as, I ran the same model under monotonic loading that gave me a peak load of 120 kN. So where am I going wrong?? Is there an error in my monitoring point locations or an interpretation error, what is it I don't know. Please help me out!!!