The above command will create a file with the information of your system (example: eos-diagnostic-160614_111731_UTC + 0100.txt); Send us this file so we can analyze it and seek a possible solution
I ran into a problem where the update to the beta failed. The reason I got was a checksum on gedit from flathub. I gave up after a couple tries but when I tried again a day later, I received no errors and the update installed without and problems.
I do not usually try betas, but I gave this a try, and am finding it very nice. I have Endless on my laptop, and when Endless 5 hits production I am planning on using it to replace Fedora Silverblue on my desktop computer.