Hi, I have the same exact problem but I must admit I am not able to use (or to understand how to use) the solution you provided.
I have tried to update the plugin with the files of the development version, but I do not see any change and, of course, I am still not able to add translation to the custom attributes.
David (or anyone, in fact), can you please give me more details on how I can get this working..? I really need this to get fixed as soon as possible.
Thank you!
