in the title, i've tried playing lonely boy by the black keys twice and whenever i go into it it does the bit where its about to play but the top bar isn't there and a lot of the songs just have a line rather than showing the difficulty, any suggestions, thanks

... Now I'm getting tired, too... this question pops up at least once per day, I guess...

 

1) Did you use the search function to find a solution for your problem?

2) Did you follow the tutorial on how to use CDLC? (means did you install the .dll and do you own cherub rock?)

3) Do other CDLCs work? If yes, the problem is specific to your CDLC and has to be fixed by the charter

 

...

So #3 is probably the case. What do the comments on that song say, do others experience the same problem?

 

A straight line means that the charter did not include dynamic difficulty. If you want to add it yourself, you can do that with one click with the Toolkit: http://customsforge.com/forum/56-rocksmith-custom-tool-kit/

Moved to Help & Tutorials.

now its with all my songs and i do own cherub rock, but what does that mean?

Did you read the guide on how to use customs?