Missing the NEXT button at the first page of the installation

For the first time, I tryed to install xibo on the fastcomet.com server, it say that the test is all right, but then I can’t find a link to go to the next step, but only a link going to the installation guide of the lcient (and not of the server), is it normal? What I should do now?

Notice the cross icon next to FileInfo. It’s a requirement and so it won’t allow you to install until you enable the FileInfo extension. Once all the requirements are satifised the Next button will show up.