Failed to open descriptor file '…/…/…/jump_force.uproject' Jump Force Mods › Forums › Modding Help › Failed to open descriptor file '…/…/…/jump_force.uproject' This topic contains 1 reply, has 2 voices, and was last updated by Ja1862 6 months ago. Author Posts March 11, 2019 at 9:20 pm #168478 farizezabcdParticipant after follow tutorial. when i want to launch jump force. a popup open suddenly March 23, 2019 at 12:44 pm #168750 Ja1862Participant Same here. Figured out how to fix it? Author Posts You must be logged in to reply to this topic.