URGENT: Unable to open project made on Nuendo 4.3.0 on Cubase element 8

I have been trying to open an old project made on Nuendo 4.3.0 on cubase element 8 and every time i open it, it says "Project was created with Nuendo version 4.3.0.This version cannot open it. After several attempts, i downloaded nuendo 4.3.0 version to try to reopen but it still wont open. Pls can anyone on here help me with a solution thank you.