Revolution Slider Error: Slider with alias homeslider not found.

i installed the life coach theme, but the slider does not work and i get this error message,
Revolution Slider Error: Slider with alias homeslider not found.

it worked the first time i installed my new wordpress site, and added the llife coach team,
I’m kinda a newbie, so had to reinstall it all again, asked iPage to reset everything including wordpress database etc.

I re-installed everything again this morning, downloaded the highend themes again maybe there is a corrupted file i thought,
and the same thing happens, i have no clue why it does not work anymore now, while it worked the first times i re-installed