Mondego

I'm using ImgBrurn 2.5.2. I'm trying to burn to a 25gb Sony bd-re or Verbatim bd-re but imgburn isn't seeing the discs. I tried even using 2.5.0 but the same thing happens, a week ago i had no problem burning to either BD-RE. Now, it will read and burn to my verbatim 25gb BD-R disc with no problem. I even updated my LG burners firmware but imgburn still dosen't see the Sony Or Verbatim BD-RE disc. Any help would be appreciated. Oh and by the way i'm using Vista... Thanks, M