---
name: Bug report
about: Create a report to help us improve
title: ''
labels: [bug]
assignees: ''

---

**Describe the bug**
A clear and concise description of what the bug is.

**Back-end (i.e. package that uses Colvars)**
Are you using Gromacs, LAMMPS, NAMD, VMD or Tinker-HP? If so, please list the version.
If using another tool, please describe it.

**Colvars version**
Paste the part of Colvars standard output starting with:
```
colvars: Initializing the collective variables module, version ...
```

**Expected behavior**
A clear and concise description of what you expected to happen.

**Output log**
If applicable, add relevant parts of the standard output from Colvars or the host program, in particular **warnings and error messages**.
