Hi,
If the save/export options are greyed out then that is the anti-piracy system doing it's thing, make sure you are running it from it's original folder and not just running the exe moved somewhere else.
The flexi-grid options are on a second tab marked "Misc" on the project form.
If you ARE running it from it's original folder (with all the pre-packaged files) then you may need to email me for further instructions as I cant post a solution here for obvious reasons.
nb. you may need to wait 15 seconds after starting it for the save/export options to become ungreyed.