This should be the behavior while importing certificates:
First it should say importing CA certifcate then finger print screen shoudl be displayed which is the cuurrent behavior.
While importing multiple router certificates the popup says "Importing router certifcates...".
This should say "importing router certifcate 1" then after imporing this successfually there should be a text saying Router Certificate 1 imported successfully, then a delay of 10 seconds( sleep 10 seconds) then say "Importing router certificate 2" then show the enrollment status screen.
I think that there is a previous case in which running Windows XP SP 2 with Java 1.5.0_02 was
affecting the SDM launcher functionality. As per the case description, launching the SDM
from a Web browser worked with no problems, but from the PC was having issues. Service
Pack 1 worked fine on both ways. The workaround was downgrading the Java version to 1.4.x. You can check for these version and use the same.