While playing around at
I got a systematic blank page, there is a problem.
Here is what I did just before :
* I created a new process,
* then edited activities,
* changed the name and details of the defaul start and
* added 2 or 3 new activities with some transitions,
* and then noticed that the end is not the end
* then I changed it's type (end to activity)
* that means that there were no more end,
* and then the page to edit activities is no more
hrum. does it help ?