First: You have opened a thread but there is already a thread, with questions and answers, specific to the get bot viewtopic.php?f=42&t=101760#p1302622.
Which version are you using?
One of the problems with the Jessie image is that the QT4 libraries are no longer in the default build.
This might apply to other libraries, although I have not heard that yet.
In the thread above you will see that the latest GUI version 2.8 does work on Jessie.
But you need to upload a newer SW release to the Gertbot to use all the new features.