Congratulations on releases!
Here is a congratulatory bug report =)
When right-clicking anywhere the following script error occurs:
Error: Spider Monkey Panel v1.1.5-beta+63bde4e (YouTube Track Manager v4.0.0 by WilB)
list.blacklist is undefined
File: Panel_YT.js
Line: 3549, Column: 54
Stack trace:
blacklistMenu@Panel_YT.js:3549:54
MenuItems/this.rbtn_up@Panel_YT.js:3585:17
on_mouse_rbtn_up@Panel_YT.js:3752:49
PS: Panel_YT.js is your script.