My HTC was run over by a bus and I am temporarily using my Samsung Galaxy S whilst the phone is being repaired.
I discovered yesterday that my google account was syncing. I was able to login into my gmail via the internet but the account would not allow me to sign in via the gmail/ youtube or market app.
From reading around it appears these apps need to be updated but there is no update option in settings.
When I try to access the play store via the browser to download , it says it is no longer supported.