Hi.
From that alone, I can get no further information.
I recommend you do the following to track the issue further down :
- make sure you're running the online viewer or the latest version of the offline viewer.
- instead of exporting all into a webscene, export layer by layer to track down if it's related to your data on a specific layer.
- if so, track further down ( maybe even with a binary-search ) to find the shape or element which causes the issue.
This way, you should most probably be able to track down the issue.
Once you can reproduce the issue clearly, please let me know and I'll try to track it down to find a possible bug.
You mentioned it worked properly so far, so I assume the issue is related to something specific in your data, but this could be anything.
Let me know ..
Matt