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.
Avogadro version: 1.1.0 Git: c52ef94
Steps to reproduce: 1) draw some atoms 2) select them 3) select copy avogadro crashes
Valgrind reveals that the culprit is MainWindow::prepareClipboardData(), line 2397. There we have
moleculeCopy->setOBUnitCell (new OBUnitCell(*(d->molecule->OBUnitCell())));
The crash doesn't happen if a unit cell is defined. The reason to the crash is most likely d->molecule->OBUnitCell() being NULL.
Reported by: *anonymous