Maybe I'm missing something? A recipe? The only way I can power the portal is with scrying gems or scrolls from my inventory. So, it's powered - left side lit - and MC says the portal is fully powered. But nothing happens, and I tried every item in my inventory just to see if it would do anything. It's probably something simple that I'm missing but my brain just can't find it.
BTW, really enjoying the game except for this snag.