I can't execute, the files didn't have any extension....
Viewing post in ViceCityBlues - Spectrum Next comments
This is the Spectrum Next Version. As far as I know, ZesarUX cannot fully emulate this machine.
Try CSpect. But you will need the sd image for emulators and a program to Open that image and place the folder there. Only then CSpect will see the folders and files.
The game is fully working on the original machine. For further help on emulators problems try your emulator fóruns.