Hi all, there seems to be a bug in the latest release of pyxform v0.15.0 that shipped with ODK XLSForm Online v1.6 and ODK XLSForm Offline v1.11.
I don't yet know what the problem is, but I've filed the upstream issue at https://github.com/XLSForm/pyxform/issues/352 and you can track progress there.
While we try to track down the problem, I've rolled back http://opendatakit.org/xlsform to the previous version (v1.5). If you use XLSForm Offline, you can download the previous version (v1.11) here.
@Ukang_a_Dickson can you help?