Good news!
I have found a way to get the hands converted from Full Tilt!
Its a really silly way in my opinion which doesnt make any sense to me but it works!
So here is what I did.
I opened the HH folder from Full Tilt where all my HHs are stored.
I opened my latest sessions .txt document.
I went to edit and selected highlight all and copied the whole content of the doc.
I went to another folder and created a new .txt doc and pasted the content in that.
I opened Popopops converter and tried to convert the new .txt doc... and what do you know it worked.