Here are the Mac instructions:

Please follow these instructions to create a new SeL. After you have created the new SeL go to steinberg.net login to MySteinberg and request a new activation code.

Please delete these files:

/Library/Application Support/ -> Syncrosoft (the whole folder)
/Library/Application Support/ -> Syncrosoft Soft-eLicenser (the whole
folder) -> Skip this step if the file can not be found!
/Library/Receipts/ -> LCC.pkg
/Library/Receipts/ -> NOS.pkg
/Library/Receipts/ -> POS.pkg
/Library/Receipts/ -> SyncrosoftLicenseControl.pkg

- empty the trashcan (Mac)

- now install the latest Syncrosoft License Control Center version....

link: www.syncrosoft.com
- after installing the latest LCC version, open a "terminal"-window (this can be found under Applictions, Utitlities, Terminal) Leave the terminal window up.

- Open a new finder window, go to /Library/Application Support/Syncrosoft/pos/ ->Synsopos

- Ctrl click on the Synsopos (not the one with bundle) and select "Show Package Contents" then double click on Contents, and then MacOS.

- drag the Synsopos file and drop it into the "terminal" - window -> This adds the complete path to the file to the command prompt

- To create the new SeL, in the terminal type: "-RegSeL"

- a valid command line should look like this now:

~user$/Library/Application Support/Syncrosoft/pos/Synsopos.app/Contents/MacOS/Synsopos
-RegSeL

notice there is a space between the path/filename and the "-RegSeL" option.

- press [ENTER], this will create the SeL. When this is complete you will see this message: "Synsopos SeL initialisation finished (errorcode: 0)"

Now you should have a new SeL. Please go to steinberg.net login to MySteinberg and request a new activation code.