Abandoned transaction found - run hg recover! teamcity 7.1

Hi.
I'm using TeamCity 7.1, I keep getting an error about being unable to pull changes from BitBucket today so I'm currently unable to build and deploy. Which is causing us major problems in the office.

This is in the logs: "abandoned transaction found - run hg recover!".

The repository: https://bitbucket.org/plutora/portal

Please can you resolve this for me!!!! as it is a pressing issue.