After successful deactivation, you must move your iGetter License file to the computer where the new copy of iGetter is installed (move it to the 'iGetter 1.5' folder). After that you must perform Activation on the new copy.
After successful deactivation, you must move your iGetter License file to the computer where the new copy of iGetter is installed (move it to the '/Library/Application Support/' folder). After that you must perform Activation on the new copy.