Impact not working anymore? .jar "fix" doesn't work anymore

[H4512]

Describe the bug
Impact client 1.16.5 is unable to locate the required Minecraft game files. When launching Impact, it reports that it cannot find the Minecraft .jar file. Manually copying a .jar from another Minecraft version does not fix the issue and the client still fails to start.

To Reproduce
Steps to reproduce the behavior:

Install Impact client version 1.16.5

Launch Impact

Client attempts to start Minecraft 1.16.5

Error occurs indicating missing or unlocatable game files (.jar)

Expected behavior
Impact should automatically detect and use the correct Minecraft 1.16.5 .jar file and launch the game normally without errors.

Screenshots
N/A

Game output

N/A (client fails before producing game output)

Crash report

No crash report generated

Additional Client Info

Impact Version: 1.16.5

Using Optifine? No

Enabled mods: None

Operating System: Windows

Java Version: Java 8

Additional context
The Minecraft 1.16.5 .jar appears to be missing or not detected by Impact. Copying a .jar from a different Minecraft version did not work. Unsure if this is a corrupted install, incorrect Minecraft directory, or an issue specific to Impact 1.16.5.