Writing a structure with a two point virtual site as a gromacs topology results in an error due to a typo in the code: https://github.com/ParmEd/ParmEd/blob/8adcb002f24eb4d898f11329392cca4df3bdb084/parmed/gromacs/gromacstop.py#L2030 It should be `EP.frame_type.get_weights()` instead of `EP.get_weights()`.
Writing a structure with a two point virtual site as a gromacs topology results in an error due to a typo in the code:
ParmEd/parmed/gromacs/gromacstop.py
Line 2030 in 8adcb00
It should be
EP.frame_type.get_weights()instead ofEP.get_weights().