Hi,
First if you bought the Scroll Bar component a “Has Bought the File” icon should be displayed under your avatar image.
Second, if you specify the correct target Movie Clip there is no reason to not work. As a suggestion try to write more clean and clear code.
As far as I understood from your explanations you have the Scroll Bar component with the instance name tScrollerMC and the target Movie Clip with the instance name mc2, and both tScrollerMC and mc2 are inside the clip Movie Clip.
In this case you can simply edit the clip movie clip, select the scroller component / open the Components Inspector Panel and simply write the mc2 instance name for the targetMovieClip parameter.
Or after you did that attachMovie stuff write correctly the paths to your clips similar to:
t.clip.scrollerMC.scrollMode = "full";
t.clip.scrollerMC.targetMovieClip = t.clip.mc2;
t.clip.scrollerMC.easeType = "normal";
Best regards,
Flashtuning