C:\\Users\\YOURNAME\\AppData\\Roaming\\Poser\\12 is where the UI layout file is located.  If you cannot get the animation palette to show by clicking its name located under the Windows tab at the top of Poser, then most likely you have it floating in the space of a disconnected monitor.  Either A: hook up a second (third) monitor to see if it shows up there OR B: open a explorer window to the location listed above (your Poser directory may be Poser Pro and a different version #) ad find the file that starts "Poser UI Prefs_" the last part of that file will be the screen resolution of the monitor you are using, this might be 1920x1080 or something else. Also be aware that you can have multiple Prefs files, you get one for each monitor that you run Poser on.  With the Prefs file that matches your current monitor (with Poser Closed) rename that file to something else I put a X in front of the name.  Run Poser and it will create a new default Prefs file. 

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13