only tries to move file if exists

lgsm/functions/command_start.sh

@@ -68,8 +68,10 @@ fn_start_tmux(){
 	if [ "${status}" == "0" ]; then
 		fn_scriptlog "Rotating log files"
 		if [ "${engine}" == "unreal2" ]; then
+			if [ -f "${gamelog}" ]; then
 				mv "${gamelog}" "${gamelogdate}"
 			fi
+		fi
 		mv "${scriptlog}" "${scriptlogdate}"
 		mv "${consolelog}" "${consolelogdate}"
 	fi