**System Information**
Operating system: Windows 10
Graphics card: None
**Blender Version**
Broken: 3.1 Alpha
(example: 2.79b release)
(example: 2.80, edbf15d3c044, blender2.8, 2018-11-28, as found on the splash screen)
Worked: (optional)
**Short description of error**
No icon generated for Curves with the new Asset Manager
**Exact steps for others to reproduce the error**
Based on the default startup:
If I add a Curve from the addon that I have created (download from https://github.com/fd3dprinting/fdparametriccurves/raw/master/add_fdcurve_extra_objects.zip) and then in the Outliner panel right click and select Mark as Asset the icon that is generated does NOT show the curve that it is attached to but rather a blank dummy icon. If I drag-and-drop this blank icon it does have the attached curve it is simply that the icon does not reflect the curve object. The new Asset Manager works fine with mech object in terms of icon generation. I am a big fan of Asset Manager, thanks for creating it.