Originally Posted by Davitron3000  |
| You might need to trade in some crystals to get your "Rank bar" up. |
I think the same.
Many times you'll need to donate crystals (or repeat some missions) to get enough Rank points to get the next mission, it happens a lot so get used to it.
You can buy the cheapest crystals/clusters at the AH and just trade them to the guard.