1.1: A user is using an outdated version of LiveSync for Revit and needs to update it.
2.1: Answer:
Hi
Thank you for getting in touch.
We have noticed that you're using an old version of the plugin. It should now be at V3.60.xxx.
Please uninstall the plugin using Windows Apps -> Uninstall and install the most recent via our article:
Knowledge Base: Download Lumion LiveSync for Revit
Does that resolve the error messages?
If not then please provide:
1. Another screenshot of the error message.
2. A copy of the .RVT file.
3. A screenshot of the Settings used to export (Shift+Click the cog button).
4. And if you are using Export to DAE or LiveSync for Revit (direct):
Knowledge Base: How do you upload files to Lumion staff?
Thanks in advance.
Change the version number V3.60.xxx to most current released nad published.
4.1: Reference: Serge's Standard Replies - Row 76