Here are the steps to replicate this error. First open gse, right click on of the sequences, and select export. Then from there, close that window, open up your talent tree, click the dropdown menu/share, and select copy to clipboard. This will result in a (AceGUI-3.0 has been blocked from an action error every time, resulting in me not able to share my talents until I /reload the game and share my talents first without opening the gse editor.
I then tried disabling the ace3 addon followed those same steps, and ended up with a gse_gui has been blocked error instead, resulting in the editor and user interface part of the addon being disabled if I were to select the “disable” option.
Finally, as an experiment, I decided to disable every other addon except for gse, followed the same steps, and I still get the same error “GSE_GUI has been blocked from an action.”