SDK isn't responding

When I launch the SDK and click any thing (tools, projects, close button) , It doesn’t respond.
system info.
CPU Intel® Core™ i5-2450M CPU @ 2.50GHz × 4
OS Ubuntu 13.04
graphics Intel® Sandybridge Mobile
RAM 4 GB
JME3 version 3.0RC2

Is there any errors in the IDE log?

no the SDK doesn’t do anything

what happens if you start it with terminal any output ?

when I run the command
jMonkeyEngine SDK &
the output is
[1] 3302

now It’s working but it shows me an exception
java.lang.NullPointerException

1 Like

Now it’s working but there is another problem when I want to create new project, it opens dialog window and shows please wait for long long time