[BUG] TF2 crashes right after loading up while using the tool

[N5s2]

Using v1.2.1.934, it launches the game, but spits out "TF2 not yet accepting RCON connections. Retrying..." Then just as the game crashes, it blinks "Unexpected error: Failed to receive data on a socket: An existing connection was forcibly removed by the remote host. : actual received size was -1

It was working for quite some time, but a week or so ago I noticed that the game would crash at random whenever I would que for casual, and sometimes the que simply wouldnt work -but after a restart it would work again. Sometimes I would have to restart it several times but after it worked once it would keep working for at least that day.

I have deleted and reaquired the custom and cfg folder in the tf2 directory, but that didnt help. I also tried typing ps hl2 | select commandline in powershell as recomended in a simmilar bug report, but all I got was:

ps : Cannot find a process with the name "hl2". Verify the process name and call the cmdlet again.
At line:1 char:1
 + ps hl2 | select commandline 
 + ~~~~~~
    + CategoryInfo          : ObjectNotFound: (hl2:String) [Get-Process], ProcessCommandException
    + FullyQualifiedErrorId : NoProcessFoundForGivenName,Microsoft.PowerShell.Commands.GetProcessCommand