Okay here's my sad tale of woe. I fought my way all the way to getting the Earth element - (it took me forever to kill the medussa snake woman guarding the door). Got the element, turned around and fought my way back out to the front and out of the cave, checked my log book and map for the location of the next element - nadda - nothing - my last log book entry was the one about getting the key from the high priestess (which I did or I never could have gotten the door open). It never registered that I got the earth element

Said a few unkind words to the god of game bugs and went back to a save right before I battled the medussa snake woman - killed her again after much cussing and yelling - got the earth element and low and behold it again didn't register in my log book. This time however I went across the last bridge and saw the portal

Went through it and got back outside the cave in a quick flash - to sum this story up - the quest for the earth element still isn't registered in my log book that it's complete but the next element marker is showing up on my world map.
Did anyone else have this happen and am I going to be okay? I mean we're talking the main quest here. If it doesn't appear in the log book that's it's been completed can I finish the game? (just so you all know I downloaded Sacred Plus before I started so I assumed that I had all the patches - was I wrong?)