Hi
I just discovered that most of the applications in 12.1 fails in my machine when the environment variable KDE_SESSION_VERSION is set exactly to 4.
$ export KDE_SESSION_VERSION=4
$ ise
Segmentation fault
If you run kde4 as desktop manager, that env variable is already set.
It works again with
$ unset KDE_SESSION_VERSION
I'm running ISE Design Suite in Debian Squeeze with KDE 4.4.3, Qt 4.6.2 , kernel 2.6.32.4 amd64.
A brief list of applications that fails are: ise, xps, impact. However PlanAhead is not affected.
I'm not sure if it's a problem with my local configuration or it's a bug in ISE Design Suite, however just doing the unset command before sourcing the settings{32,64}.sh files it'll work fine.
Best regards.