Troubleshooting
Warnings that will not go away, a red support, a shared link that lost its scenario, and progress that did not sync.
| Symptom | Likely cause & fix |
|---|---|
| UPLIFT — unstable! will not clear | The load (or part of a UDL) sits beyond a support or hoist. Move it back between the supports, or in Beam mode add ballast. This is the lesson, not a bug. |
| Skew warning on a load that looks central | Self-weight or chain weight is asymmetric because the insets differ, or a second load is off-centre. Check both loads and the insets. |
| A support is drawn red | The reaction exceeds the WLL of the hardware chosen on the Safety factors tab. Pick a different preset there, or reduce the load. |
| Bridle inputs jump or refuse a value | Apex x must stay inside the anchor separation, and the drop has a minimum — a 0° bridle would need infinite tension, so the tool clamps it and says so. |
| Steep bridles (legs above ~45°) look right now but did not before | Fixed in August 2026: drops were silently capped. Re-open old scenarios; the numbers are now what the geometry says. |
| A quiz explanation seems to contradict the scenario | Several explanations were corrected in the same release. Reload the page so the current version loads; if it persists, note the question and report it. |
| Numeric answer marked wrong although it is close | The tolerance tightens as you level up, and it is judged in the displayed unit. Check the correct within ±X % note and your Unit setting. |
| Shared link opens the tool with the default scenario | The part of the link after # was lost — some messaging apps cut it. Ask the sender to press Copy link again and send it as plain text. Signing in after opening the link is fine; the scenario is kept through the login. |
| Saved scenarios missing on another device | Both devices must be signed in to the same account and online. Reload. See Account sync. |
| Progress won't be saved in this browser mode | Private browsing or blocked storage. Use a normal window; sync needs local storage to hold the data first. |
| Print window was blocked | Allow pop-ups for this site and press Print again. |
| The disclaimer keeps reappearing | It is shown once per account until you press Got it; afterwards a slim strip stays visible by design. |
The numbers do not match my rigging course
Check the unit first (kg, kN, lb), then whether self-weight and chain weight are on. If a course or a manufacturer's span table still disagrees, the course and the manufacturer win. RiggingSense teaches the statics with illustrative presets; it does not carry certified data.
Thanks for the feedback.