Gerry Grant 0 Report post Posted April 27, 2018 (edited) I un-installed Nitro Pro 11, but beforehand I wrote down the serial number. When I reinstalled the serial number would not work. Can anyone help, please? I get error -20 Edited April 27, 2018 by Gerry Grant error Share this post Link to post Share on other sites
Mario K. 0 Report post Posted April 28, 2018 @Gerry Grant error 20 usually means that you have misspelled your serial number. Please reach out to Cleverbridge, our administrator partner, to get the correct serial number. You can contact Cleverbridge here: https://support.cleverbridge.com/hc/en-us Share this post Link to post Share on other sites
