I was running the campaign on normal mode with 1 fireteam member - We were at the step where we had to restore power to the altar (Step 11 of 31). We both did that quest step OK and it ticked off, then my fireteam member did the Rite of maintenance to complete her quest. Then at that point I have no interact option at the altar so cannot progress the quest. I have orbited, changed characters, reloaded the game but there is nothing I can do to progress. On the Keplar map there is no quest marker at Caldera so I am completely stuck. For info - This is an alt character so I have completed the campaign on my other 2 characters.