I've sent you an email with some initial tests but here's some more including some bugs
Material Editor
After changing the diffuse tint. Select next material and tint changes to next colour but numbers remain from first one.
Additional - Diffuse Tint default = 149. Wouldnt 128 be better at its in the middle, 0 - 255.
Preset Editor
Whenever you initially open preset editor ALL folders are open by default. ARGH
Additional - only project files should show unless requested.
You can still have 2 presets with same name. Please only one. Ideally you should be able to update a preset with any additional work and it should auto save unless you give it a new name.
CTD - I saved a preset to a new preset libary. But when I restarted etc and tried to bring the item into scene CTD.
Preset has a physics proxy and an lod1.