Runtime error: bitmap creation failure error when trying to publish to sketchfab

Hi all,

I have a problem and I do not know what to do anymore.
I have a scene that needs to be uploaded: its has 30k vertices and 3 texture maps of 512/512 (2 standard and 1 opacity map).

I tried to scale down the textures, delete some objects in the scene. Exporting without textures etc
But I cant seem to find the problem…
Is my file corrupt? Did someone has this issue to?

Thanks for the help

How are you uploading the file? Are you using one of our exporters?