All parts (e.g., Sort.rar, Sort 02.rar) must be in the same folder for extraction to work.
If "Sort 02.rar" is accompanied by files named "Sort.part1.rar" or "Sort.r01," it is part of a multi-part (split) archive . This technique is used by file-sharing hosts or to break up massive datasets into manageable chunks (e.g., 1GB files). Sort 02.rar
Are you getting a ? Are all the parts (.r01, .r02, etc.) in the same folder ? Creating recursively sorted RAR archive All parts (e