Russ Marshall Posted June 23, 2021 Report Share Posted June 23, 2021 Tried to Activate Nitro Pro 13 on new computer today, after deactivating the prior activation. Keep getting -20: Error - Invalid License Number. I have 2 activations and have only installed once prior and far less than a year ago. Link to comment Share on other sites More sharing options...
Official Nitronaut Leslie V Posted June 23, 2021 Official Nitronaut Report Share Posted June 23, 2021 Hello @Russ Marshall Thanks for your message - I'm happy to assist you. The error message -20 means that the serial number you are trying to activate is for a different version of Nitro Pro. Please uninstall what you have and get the correct version 13 installer from the page below:https://www.gonitro.com/nps/product-details/downloads After installation, activate with your serial number. Please let me know how you go. Link to comment Share on other sites More sharing options...
Russ Marshall Posted June 23, 2021 Author Report Share Posted June 23, 2021 Thanks, that was the solution. All is well now! Link to comment Share on other sites More sharing options...
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