When you assign a multiple tasks to computer, and then later want to change the Order of the jobs in Scheduling Wizard, the eXpress Console would crash.
Generally trying to access any additional tab in Wizard would cause this crash:
GSS 3.3.12 and 3.3.13
defect
In order to resolve this issue it's required to update/replace eXpress console executable with provided attachment.
Issue would be also resolved in next GSS release 3.3.14.