If Lightning Payroll says 'Failed to execute script payroll', then the program has been reinstalled while it was still running in the background.
To fix this error, please restart your computer, then reinstall the program again using the appropriate link for your computer below.
Download for Windows (Supports Windows 8.1 and above)
Download for Mac OSX (Supports macOS 10.14 and above)
If the error persists. please try disabling your security software, then try again. If your security software is out-of-date or failing it will flag our safe installer and prevent a clean installation.