Problem during migration from 1.8.6.1 to 2.1.1

Hi, I have an installation of Dokeos 1.8.6.1 on my server Ubuntu. Everything works fine. Following the instructions, I want to upgrade to the newer version (2.1.1) but I have a problem that I can't find a solution for!

As told in the documentation, I downloaded the installation files and put them in the same directory as Dokeos 1.8.6.1 by overwriting the old ones. I start my upgrade process by pointing at /var/www/dokeos/main/install.

In step 1, I choose my language.

In step 2, I choose upgrade from Dokeos 1.8 (just above, the installation indicates me that there's already an installation of Dokeos on my system). When I click for the upgrade, the installation process tells me that Dokeos 1.8|1.8.2|1.8.3|1.8.4|1.8.5|1.8.6|1.8.6.1 is not found in the directory. However, I can continue to step 3.

In step 3, I accept the terms.

In step 4, the host, the username and the password are already there (localhost, root and my password). My installation of Dokeos 1.8.6.1 has been done using a single DB so the upgrade is also set to use the default dokeos database "dokeos_main". When I click on the next button to go to step 5, nothing happen. No MySQL error message, no indication on my screen. It's like the button is not configured!

I read a lot on Dokeos forums and I've been searching on Google for a couple of days but I can't find the solution for this problem.

Can somebody help me please?

Thanks,

 

Bruno