What I expected to happen was clicking on PLAY and it would launch the version, and doesn't matter which profile i use, or the launcher(2.0.806 or the old one)

What actually happened
https://bugs.mojang.com/browse/MCL-5414?filter=13500&jql=project%20%3D%20MCL%20AND%20status%20%3D%20Open%20AND%20text%20~%20%22game%20doesn%27t%20start%22%20ORDER%20BY%20affectedVersion
or just:

MCL-5414 was looking like my case but then i downloaded the old launcher to see if it fixes but it did the same thing or something similar
(old version log in the attachment)

on the new launcher:
i press play it closes and quickly(i only managed to read "unpacking....something/somewhwere...") i guess it the same bug in both cases

Steps to Reproduce:
1.open any of the launchers
2.press play
3.read the error message
ps.sorry for my bad engreish skillz(if there is any error) and maybe is caused by another theread i will create soon "launcher takes long to download data: MCL-6411"