Error al tratar de utilizar una extensión ( cualquiera), no such class error

[Taifun]

You got the no such class error...
Do you test using USB? Are you using an emulator?

See also

Problem with any extension (no such class import error)

another no such class error in the companion app via USB... @ewpatton try to connect via wifi see also this thread Taifun

Taifun