I hope you managed to deal with the burn-out. Except time, sweat and hope, which is not nothing, did you invest and lose more than what the down payments covered (I mean, capital)?
Regarding the stall, are there any other funding opportunities? If PIA considered funding the project for some time, maybe others would, never know. What will happen to the sourced N900s if no alternate funding options exist, or if it is now deemed unreasonable to continue anyway?