The Outliner window no longer shows up

Since earlier this week, the Tabs Outlier window no longer shows up. It is counting tabs, but clicking on the extension does not pop up the window, nor does the window auto-pop-up anymore at startup. Adding it to a new profile works fine but to the currrent active profile does nothing.

LE: Backed up all of the extension data from  the profile page, reinstalled, recopied all data, now it starts still but i have /none/ of my trees/tabs saved.