If “My Tasks” window disappeared
Most possible is that you have moved it to a separate window. Perform the following to reset all the interface settings of Flash Decompiler:
Go to C:\Program Files\Eltima Software\Flash Decompiler Trillix\tools (the default folder for Flash Decompiler installation) and find the “clear_layout.reg” file. Doubleclick on it and the default interface settings of Flash Decompiler will be restored.