SS2 Tool "Not a valid game"

[665cc316019ddbedfords_kin]

Not sure how to resolve this. A little help please? 

SS2Tool Log
Version: 6.1.1.7
17.01.2020 12:04:23
You have the latest version of SS2Tool
Game dir: E:\Games\Sshock2
Exec dir: E:\Games\Sshock2
AVI: /10//103401
CRF: 16/17/307686/307850
MIS: /23//247908
Checksum error [564bdb08a16bafca83c2e305698eaefc]
Not a valid game. No changes were made.
If you think this is a mistake, post this log to systemshock.org.
Creating log file at E:\Games\Sshock2\ss2tool.log

[665cc31601c3cvoodoo47]

your SS2 install is too incomplete - reinstall from whatever media you have, pick the full install option if present.