Well m8ty's 2 days gone now and still no coasters at x2.. I can only think that because burning at x2 takes/needs more power from the lense that my nicoteen (spelling) from my dreaded cigs put a light film on the laser AnD the fact that I never noticed because it has been some months since that I burned at x2 (cost of pioneer blanks)what to say that x2 may not have worked even before the 1.90 upgrade? Who Knows? Other theorys accepted..greatfully..but heh food for thought if it happens to anyone else..cheers:)