Are there with the same name ending in .002 , .003 , etc. in your folder?
To help you find the missing pieces or confirm the content, could you tell me: did you download this from? SLG02.7z.001
Right-click on the .001 file specifically. Extract: Are there with the same name ending in
Ensure the filenames are identical except for the final numbers; changing the name of one part will prevent the software from linking them. SLG02.7z.001
If any numbered part is missing, the extraction will fail or show a "Can not open file as archive" error.