Ubuntu One - SSO signup doesn't give meaningful error for existing accounts

Binary package hint: ubuntuone-client

I just opened the Ubuntu One preferences and tried to create a new SSO. I'd forgotten I already had an account with that email address. The account creation process failed (not unreasonably) and I was presented with the account creation dialogue with a red exclamation mark next to both email addresses but no explanation was displayed as to the reason for the rejection.

I was left looking at a screen with no way forward until it occurred to me to try the using the email address at the login prompt then pressing the forgotten password link.

I realise there is a security issue here and it's not a good idea to reveal that an account exists but anyone who knew the platform would know that a rejection of the email address without explanation was caused by an already existing account so I think a meaningful error message would be a good idea here.

Thanks.