The Internet Update feature of the jv16 PowerTools 1.4.1 has the following warning text: "1.5.xxx (upgrade, don't install over old version)"
If you wish to continue to use the newly-installed jv16 PowerTools 2005 you must purchase an upgrade license, it only costs $5.95.
If you wish to go back using the jv16 PowerTools 1.4.1 then simply download the old version from our website and install it back.
if you have lost your original license for the product, please contact: support@macecraft.com