Are you talking about Checkpoint's secure Client?
Let us know
Secure client has it own uninstall program/script which is located in the Applications/ Check Point SecureClient folder,The file you are looking for is called Uninstall SecureClient.
So at this point you may be better off if you want a complete removal to reinstall Secure Client then reboot and run the uninstall script.
Let us know if you need more info.
That is why I suggested reinstalling it so you could use the uninstall script, Other wise we will need to find some other folders and preferences files.
Let me know if this is not an option.
In that case can you do a spotlight search for CPsrsc-50 and let me know if you find a folder by that name, If not search for scuninstall.command
first tell me if it contains a file called scuninstall.command, If it does then try launching it and see if it will uninstall the program, If not just trash the CPsrsc-50 file and then try to install so you can run the uninstaller.