@bigoofman Addendum: I can see that this question arose almost a month ago. At that time @burnout426answered with a link to a website with a possible solution. Unfortunately there was no feedback from the user whether the procedure described there could solve the problem.
@pierox21 For the settings, use Sync or just copy Opera's profile directory and paste it into GX's one.
Please notice that it will override your GX settings.