Top FAQ

• Why do I get IO_SAVE_EMPTY_FILE error in Revit plugin?

  The error code 'IO_SAVE_EMPTY_FILE' upon exporting to .fbx usually occurs due to certificate version mismatch. To resolve this issue, please visit the Revit plugin page and download the latest Standalone version under the 'Latest Releases' section, or update it via the Auto-Update Service.

• What versions of Revit software are supported?

  Our plugin is compatible with Revit 2022 and newer. Support for future stable versions will be added once released.

• Why does the SketchUp plugin crash during export?

  The SketchUp plugin crashing usually occurs when using an outdated plugin version. To resolve this issue, please update it via the Auto-Update Service.

• Why did the Blender plugin not fix the shading issue?

  While the ‘Fix Shading Smudges’ feature can be used with most models, it may not resolve the issue if the original model has a low number of polygons or if the format conversion has altered the normals. In such cases, try re-exporting the model, or use Blender's built-in tool: Select all meshes -> ... Show more

• How to use the Auto-Update Service?

  VU.CITY Auto-Update Service can be used to keep plugins up to date, ensuring compatibility with 3D environments. However, it does not pull updates automatically and requires a manual trigger to start a process. To use the service, please visit Auto-Update service page where from it can be downloade... Show more

• Why isn’t my Knowledge Base link working anymore?

  With the launch of our refreshed Knowledge Base, some content has been reorganised. As a result, existing bookmarks or saved links may no longer point to the same pages as before. To find the article again, use the search tool. If you’re unable to find what you’re looking for, get in touch with the... Show more

• Why am I seeing a licence file error?

  Message:Failed to download licence. HTTP status: 404 NotFound This message appears when the plugin cannot retrieve its licence from VU.CITY when Revit starts. If the message continues to appear, contact VU.CITY Support. Include a screenshot of the message and the time it occurred.

• Why does the plugin say that the Survey Point or Project Base Point was not found?

  Message: Something unexpected went wrong with that process. Survey Point/Project Base Point not found. This message appears when the plugin cannot find the positioning point selected for the export in the Revit file. For example, the plugin may be set to use the Survey Point, while the Revit file... Show more

• Why am I seeing an unexpected exception during export?

  Message:Exception: Object reference not set to an instance of an object. This message appears when the plugin expects information in the Revit file that is not available, causing the export to stop. It has been seen when exporting Revit family files (.rfa), which do not contain some of the projec... Show more