I downloaded the full body model files from the ULB_Project, and started to use the version without finger DOFs, UpperLowerBodySimple.osim. I deleted everything under the pelvis segment since my interest is upper body motion. First, I tried to use Scaling tool. The model is scaled, then on the marker placement step I got the following error:
Exception in ID: SimTK Exception thrown at SmallMatrixMixed.h:878:
Error detected by Simbody method lapackInverse(Mat<>): Matrix is singular so can't be inverted (Lapack getrf info=3).
(Required condition 'info==0' was not met.)
That error is an output of OpenSim 3.0. I also tried Scaling tool on OpenSim 2.4. It took a couple hours to solve just a frame of kinematics for marker placement, and the experimental markers were far away from the virtual ones. I also used a version of the model without deleting anything but just adding virtual marker objects, same outcome.
Also, OpenSim 3.0 crashed many times when I tried to make changes on the visualization objects through GUI. Every tool I used was working remarkably slower compared to the other models I used such as Gait2354.
I added all the files that can be used to reproduce the error using Opensim 3.0. My operating system is Windows 7.
Thanks for your help.