Thanks for the report!
I believe we found the issue. It is related to opening the the app externally through Windows explorer rather than using the in app file browser. There were settings problems that broke opening files externally. In the meantime, you should be able to use the in-app file browser to open files.
We'll be pushing an update today that fixes this issue so it'll be up on the store in a few days.
However if this is not your issue please continue to report. Thanks!
I believe we found the issue. It is related to opening the the app externally through Windows explorer rather than using the in app file browser. There were settings problems that broke opening files externally. In the meantime, you should be able to use the in-app file browser to open files.
We'll be pushing an update today that fixes this issue so it'll be up on the store in a few days.
However if this is not your issue please continue to report. Thanks!