Problem -When launching DRAWings 8 there is a 'CBU Failure' error.
Solution Restart the computer, then launch DRAWings 8, it will error out and show the CBU error again. Once this is done, on the bottom right in the task icon section (the icons next to your clock) you will see a key with an orange circle.
Double click on this to open the activation window. In the window, put the numbers you have to activate. Once you have it activated you will be able to launch DRAWings normally.