Hello,
This is a system error and means
The system cannot find the file specified..
When this error occurs again can you please browse to the file location exposed in the error message (before pressing the [OK] message box button) and check if the prerequisite setup was successfully extracted there?
Also, for testing purposes only, if there is any antivirus program installed, can you disable it temporarily before launching the setup package and see if this helps. Maybe there is an AV falsely detecting your setup package.
The best way we can further investigate this will be if you could identify a test case or pattern when this behavior occurs.
All the best,
Daniel