1. Import clipart gives 404 when i try to upload a .csv file with my cliparts, always gives me a 404 error. I suppose that is not my problem, because your demo site have the same problem.
2. Curved text: Don´t works in the x3 version.
3. Upload .svg gives low resolution alert: The system ignores that .svg files are vectorial, and there is no problem about upload a file in low resolution.
4. Layers: when one object is deleted from the canvas, the object don’t desappears in the layers list and is always there. I see that this works fine in your demo, but not on my installation.

Thank you very much