Try to enter you login detail in a tb_login.dat file in Toribash folder (if it isn't there, create one). Data in it should look like this:

user your-username
pass your-password

That should get you through this connection issue (it can be happening due to user restrictions / firewall settings / connection problems but making a login file manually should be faster).

I was trying to get info on your initial problem with latest version from Dranix yesterday but he hasn't responded yet.
Did you try checking if your CPU / Memory is fine at the moments when the game crashes?