Recharge Industries stepped forward to buy the firm out of administration in February giving hope that stalled plans for a £300m car battery plant in Northumberland could be resurrected.
But an update from administrator EY claimed that payment of the final installment on the £8.75m buyout deal has been missed and remains “unpaid and overdue”.
A spokeswoman for Recharge Industries told the BBC that the timing of the final instalment to be paid to EY depended on a “funding facility, which when closed will also cover the cost of the land acquisition” and provide extra cash for the project.