Use a program like 7-Zip or WinRAR to open only the .001 file.
Ensure you have all the numbered segments (at least SS-Lisa-v-045.7z.001 , .002 , and .003 ) in the same folder.
To access the contents, you cannot open this file by itself. You must:
This indicates that the file is the third part of a larger compressed archive. In this case, the archive was split into multiple smaller segments (e.g., .001 , .002 , .003 ) to make it easier to upload or download.