This is the most common and dangerous risk. Cracked executables are a primary vector for malware. Your so-called "TeraCopy Pro Pre-Activated" could easily be a trojan designed to give hackers remote access to your PC, a keylogger to steal your passwords, or even ransomware that will encrypt all your personal files and demand a payment to unlock them. The files you are trying to copy safely could be the very ones that are destroyed.
You can set TeraCopy to perform specific actions (like skip or overwrite) when it hits a filename collision, allowing the process to finish without waiting for user input. teracopy preactivated new
