Avogadro 1 is not under active development, the repository was archived in September 2021. Development of Avogadro 2 is being done at https://github.com/openchemistry/avogadrolibs. Avogadro is an advanced molecular editor designed for cross-platform use in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas.
When I open it in avogadro, it asks me if I want to build a rough geometry. When I say yes, it crashes. This is with avogadro 1.2.0, Qt 4.8.7, OpenBabel 2.4.1, on linux.
I downloaded a molfile for ClF4+ from this page: https://www.ebi.ac.uk/chebi/searchId.do?chebiId=CHEBI:30126
When I open it in avogadro, it asks me if I want to build a rough geometry. When I say yes, it crashes. This is with avogadro 1.2.0, Qt 4.8.7, OpenBabel 2.4.1, on linux.