Problem opening RSLogix 5000 application

[contech-eg]

Dear all,
i have an RSLogix 5000 application that i can not open with version 18 as it gives the following message[Project was created with newer version of RSLogix 5000 software].I don't have another version of RSLogix.
the application is attached here:
http://www.4shared.com/file/hK6u3aVw/GPVERSA_GP.html

[prushmere]

Hi,

It can't be converted to v18 as it uses an L72 CPU, you will need Logix v20.