Problem with Forte 4 (Sune One Studio) and SuSE 8.0

I have problem with Forte 4.0 I installed the latest JDK (1.4.0_02) , then I put the directory to the $PATH. When I lauch the Forte 4.0 Installator, it works with this JDK/SDK. (Without the Forte Installator should not work). But when I accept the Sun License and go farther, the installator explains me that it did not have detected a suitable SDK on my system (1.4.0 is recommended) Then I tried with indicating the path of the new SDK 1.4.0_02 but that doen not work. Did you get similar problem with Sune One Studio (Forte 4.0) ? Arnaud