Password invalid when I try to attach code to existing review

Judging from what I see in the errors, I am making an assumption that you are using PerForce as your SCM. I'd recommend checking the PerForce configuration in your Client GUI. Ensure that the server information is still correct and that the password for connection to the SCM is still valid.

You can also validate your connection to the Collaborator server itself. Go to File > Preferences and Test Connection to the Collaborator server.