Your license key will be delivered as part of an email.
The license key installs into a running copy of Zerene Stacker, so be sure to download and install the software first if necessary.
To install the key into Zerene Stacker, proceed as follows:
Open the email.
Find the portion that contains the license key.
Select (highlight) the entire license key, including the lines that say ==== BEGIN LICENSE KEY ==== and ==== END LICENSE KEY ==== .
Be sure to include all four equal signs that appear at each end of ==== BEGIN LICENSE KEY ==== and ==== END LICENSE KEY ====. If you leave out even a single equal sign, you will not be able to enter the key.
Copy the license key to clipboard using control-C or command-C.
Launch Zerene Stacker and go to Options > Registration…
If you are running an expired trial, then a browser window may pop in front of Zerene Stacker so that it looks like Zerene Stacker is not running. In this case just minimize the browser window to expose the Zerene Stacker window, and proceed to Options > Registration…
Paste the license key into the Registration window using the “Paste from clipboard” button at the bottom of the Registration window.
This should make the “Enter” button change from disabled (gray letters) to enabled (black letters).
If the “Enter” button does not become enabled, then some problem has occurred in transferring the license. Be sure that the entire BEGIN and END lines are present, that you have included all the equal signs, and that any accented or non-English characters such as é or ö appear correctly. If such characters are scrambled, then try using the keyboard to make them look correct. If you still cannot make the “Enter” button become enabled, then contact firstname.lastname@example.org.
When the “Enter” button becomes enabled, press it. This will record the license key and make the Registration window disappear.
The title bar of Zerene Stacker should now show the name that the license was issued to (Joe Smith, in this case):
You can confirm that the license has been accepted by going to Help > About Zerene Stacker.
If your license does not expire (and most do not), then the box will not show a “License expires at:”
If you run Zerene Stacker on a different computer from where you receive email, than you can transfer the license key by using any text editor (Notepad on Windows, TextEdit on Mac, etc) to write it to an ordinary text file.
Please do not attempt to re-type the key. That long string of hex digits is very difficult to type correctly by hand. Every character must be exactly correct, or the Enter button will remain disabled.