icon problem - can't change

True Launch Bar v4.4.3 beta

In a menu I have a button that opens up a folder containing programs of mine. I changed the icon to point to one of my liking but the normal folder icon displays. The icon customization screen shows my icon.

****** the problem was using thumbnails. I changed to icons and my icon changed

i never encounter such problems，you'd delete the root list of tlb and add again, i supppose.

but my have a problem even more sick, the icons all in the tlb are bluurred, unlike the appearance in those days tlb just installed.

are this coursed by using IconPackager?
Any master players could help me ?

recreate the root?