Hello -
Can you please post an image of your Material that is causing this crash, making sure to include any Material Attribute information as well?
For the error “Seems your Project was saved in higher version,” the Editor is not backwards compatible with itself, so if you create something in 4.8.3 and tried to open it in 4.3.0 you will get this error.
For your crash with the Unknown Exception or any other crash (including the Translucent Crash of your question title) you might need to report, can you please make sure to post your Machine ID generated by the Crash Reporter and ensure that you have submitted the crash?
Thank You
Eric Ketchum