installation failed

Hi,
I try to install rasplex using get rasplex for windows, the last one.
i format the sd card with sd format first .
i start the program get rasplex and at the end it tell me that’s ok but need to format a second partition. i accept.

when i put the sd in the raspberry3 i stay on the first color screen.

I try with 2 differents sd card : same issue.

Do you have any idea ?

thanks

you dont need to format the SD, all it will be done by the installer
what installer are you using?