GHTCP "Invalid Argument" error

[RikyBGM]

Hi guys!
I'm having a little problem with GHTCP.
I just added a new song on my song list and when i click it to put it in a custom setlist i get this error:

"Unhandled exception has occured in your application.[...] InvalidArgument=Value of '1' is not valid for 'index'.
Parameter name:index"

This is the first time i add that song on my GH and i would like to know why do i get this error.

[RikyBGM]

Hi guys!
I'm having a little problem with GHTCP.
I just added a new song on my song list and when i click it to put it in a custom setlist i get this error:

"Unhandled exception has occured in your application.[...] InvalidArgument=Value of '1' is not valid for 'index'.
Parameter name:index"

This is the first time i add that song on my GH and i would like to know why do i get this error.