Troubleshooting

Start with the earliest stage that differs from expectation. Changing the final measurement rarely fixes a wrong channel, axis interpretation, threshold mask, or label image.

Symptom	Start here
Wrong objects, counts, channels, units, or stale tables	Common problems
Slow interaction or high RAM use	Performance and memory
Installation/plugin discovery problem	Install VIPP
Question, reproducible bug, or missing behavior	Get help or report a problem

Before debugging your own file, open the matching bundled example. If the example works, compare source type, axes, scale, dtype, channel mapping, shape, and release version. If the example fails, capture the exact error and version without changing multiple settings at once.