Just updated to 5.10, following the update my login failed via PvP.net connection failure. Tried to reopen the client to login, and got a bugsplat. Same thing happened on the next 4 attempts. I can't login and would like to avoid reinstalling if possible..., but if I must reinstall I'd like to know this isn't gonna happen again. Running Windows 8 Pro.
I also have the same issue, on a Windows 8. Bug Splat ever since the 5.10 patch. I got on last night after reinstalling, but now today it's back to Bug Splat. Tried the steps listed; deleting lol_launcher and running as Admin, but it didn't work. :/
Have the same problem on EU NE. Already sent ticket... Tried to reinstall but after uninstall patcher is still not working. Deleted "lol_launcher" and still not working.
Update: A reinstall was uneffective, problem continued in the reinstalled client. Found a solution that worked for me from an old instance of a patch causing client crashes:
Go to "C:\Riot Games\League of Legends\RADS\projects" Delete "lol_launcher" Start your client as admin
