The most common cause is that your antivirus software mistakenly flagged cls-lolz.exe as a threat and deleted or quarantined it. Corrupted Download:
Some repacks detect VMs. Run on a physical PC. Or use (if available) to test. Failed To Start Cls-lolz X64.exe REPACK
If all else fails, switch to a different repack version or use a virtual machine. Remember to re-enable your security software after the game or software is installed. The most common cause is that your antivirus