Unable to open project in Mendix Studio

Hi,   I notice that I am unable to open my project in Mendix Studio in Studio pro.     I am also unable to open the app using Mendix Studio when I edit it in the developer portal. In setting, it also says that the Mendix Studio is enable for the current project. However, it throws up an error when I try to edit the App in Mendix Studio.  
1 answers

In Mendix Studio Pro go to Project → More versioning → Manage Branchlines, select the branch you want to use as branchline in Mendix Studio and click the Globe:

Once you have set this, Mendix Studio will be enabled and the changes you make there are stored in the selected branch.