Common Issues

The problems that come up most often, each with a quick fix. For how to find where something broke, see Troubleshooting. For export and Unreal problems, see Nanite Troubleshooting.

My trees vanished and nothing is red

The licence check stops Natsura producing geometry without flagging a node. Read the last line of the validation log, as described on Activation & Licensing.

Parts display wrongly

Parts on the Assembly Decoration chart or in the viewport sometimes draw wrongly. Toggle the node's display flag off and on.

Dragging a slider is slow

Every change recooks the tree. Set Houdini's update mode, at the bottom right of the window, from Auto Update to On Mouse Up, so the tree only updates when you let go. While you shape the branching, set Output on the display toolbar to Skeleton, which draws the growth curves only.

A scene from an older version looks different

Scenes upgrade when they open, and the console lists what changed. See Upgrading for what carries over and what to check by hand.

A node I edited inside doesn't get the fixes

If you turned on Allow Editing of Contents on a Natsura node, it keeps its old contents when you update Natsura. Right-click it and choose Match Current Definition to pick up the new version, which discards your edits inside it.

The wind preview stopped

After Simplify Tree Rig and Skin, the wind preview can stop. Restarting Houdini may fix it. The preview also only moves where a Visualize Assemblies node displays the tree (as inside Assembly Resource and Rig to Assembly), or on a displayed Wind Config.

Natsura doesn't load

See the troubleshooting section of Installation.

Status

Known issues in 0.7.3, apart from the Unreal ones on Nanite Troubleshooting:

• Grow: mapping Growth % from its own u reads the parent's u.
• Surface Decoration: Spiral Inherit and None can look the same.
• Classify: a Classify on its own can error on its default links.
• Assembly Decoration: after Replace With, the chart axis can keep the old trait.
• Wind Config: Snap treats parts as forks, so it can stop early near parts.
• Wind Config: scenes saved in the 0.7.3 previews with Carve set to Width may open on Tip Distance.
• Export: changing Name or Version is slow on big trees.
• Export: extra UV sets and vertex colours are not exported yet.