BasicCmdLineApp reports error: have 4 vertices when there should be =3

[citystrawman]

Hello, I am trying to "cut" slope.obj using slide.obj, the models are shown as follows: the obj files are uploaded in the end.

I find BasicCmdLineApp and I followed its instruction <exe> <path/to/source-mesh> <path/to/cut-mesh> as follows:

and it reports errors: have 4 vertices when there should be =3

However, my test meshes are all triangle based. I am not sure if I did it correct. I appreciate if anyone could help me about this issue.

models.zip

[BinalyseZXC]

I have also noticed the same issue as you, which seems to occur when calling mioReadOBJ.