Help with serial numbers

This web page is designed to help you solve the most common problems you may encounter while registering our products. Please click on the relevant link below to get help.

TweakMASTER 3.0 upgrade

You have a license and registration information for TweakMASTER 1.x or 2.x, and after you upgraded to TweakMASTER 3.0 or later the software reverted to evaluation mode and your serial number is not accepted anymore.
TweakMASTER 3.0 upgrade information.

DU Meter 4.0 upgrade

You have a license and registration information for DU Meter 3.x, and after you upgraded to DU Meter 4.0, your serial number has not been accepted.
DU Meter 4.0 upgrade information.

Lost registration information

You purchased a license to one of our software titles, but have lost or never received the registration information (user name and serial number).
Recover your registration information.

Help for RealNetworks customers

If you purchased a license for TweakMASTER PRO in the RealNetworks web store, TweakMASTER may refuse to accept your serial number after an upgrade.
Get a replacement serial number.

How to enter the serial number into the software

You have trouble entering the serial number correctly into the software: cannot find where to enter it, confused with all the letters and digits, etc.
Detailed instructions for software registration.

New user

You have never purchased a Hagel Technologies software license, and therefore you do not have a serial number.
Purchase software license.

Other technical issues

If you have a problem other than those specified above, please visit the technical support web pages for help.