i copied your .fbd and .inp file and get no error:
CalculiX Version 2.17, Copyright(C) 1998-2020 Guido Dhondt
CalculiX comes with ABSOLUTELY NO WARRANTY. This is free
software, and you are welcome to redistribute it under
certain conditions, see gpl.htm
You are using an executable made on niedz., 26 lip 2020 09:49:05
The numbers below are estimated upper bounds
number of:
nodes: 252
elements: 120
one-dimensional elements: 0
two-dimensional elements: 0
integration points per element: 8
degrees of freedom per node: 3
layers per element: 1
distributed facial loads: 6
distributed volumetric loads: 0
concentrated loads: 0
single point constraints: 36
multiple point constraints: 1
terms in all multiple point constraints: 1
tie constraints: 0
dependent nodes tied by cyclic constraints: 0
dependent nodes in pre-tension constraints: 0
sets: 4
terms in all sets: 642
materials: 1
constants per material and temperature: 2
temperature points per material: 1
plastic data points per material: 0
orientations: 0
amplitudes: 2
data points in all amplitudes: 2
print requests: 2
transformations: 0
property cards: 0
STEP 1
Static analysis was selected
Decascading the MPC’s
Determining the structure of the matrix:
number of equations
720
number of nonzero lower triangular matrix elements
17910
Using up to 1 cpu(s) for the stress calculation.
Using up to 1 cpu(s) for the symmetric stiffness/mass contributions.
Factoring the system of equations using the symmetric spooles solver
Using up to 1 cpu(s) for spooles.
Using up to 1 cpu(s) for the stress calculation.
Job finished
Total CalculiX Time: 0.081971
Exit code: 0
maybe you can run your inp. file with calclixlauncher:
