When I try to launch google-chrome, I get the following message:
Failed to create a ProcessSingleton for your profile directory.
This means that running multiple instances would start multiple browser processes
rather than opening a new window in the existing process.
Aborting now to avoid profile corruption.
I tried to uninstall and reinstall Chrome following the advice here How to install Chrome browser properly via command line?, which did not solve my problem.
How should I proceed?