[8FS_Bulau]

If you're sure you have all the parts together in the same folder, then the installer should find each part it needs. Sometimes, when downloading and saving the parts, it's possible to accidentally rename one or more of them (file extension for example) then the installer can't find next part.

Can you list, exactly, the complete filename and extension (part after the dot) of all the parts you have in the folder, and we can check for you?