Trouble playing UM CDs?

[Diane Kistner]

My UM I will play. I can get UM II to play after repeated efforts to jiggle it and trick it into going. UM III, IV, V, after testing will absolutely not play. I think it's because they are so thick. I'm disappointed, because I don't want to stop my work with them. All the others I received play fine. <BR> <BR>I'll have to return these for replacements, apparently, but I'm wondering if anyone else has had this difficulty and how they resolved it. Maybe there's a trick? <BR> <BR>Diane

[Customer Support]

Dear Diane, <BR> <BR>It doesn't make sense that the other disks don't play in your CD player. These are very precise manufactured items, that are uniform in size and specs. Try using a different player, make certain you are using fresh batteries or AC power. If there is a problem then please call or email customer support for replacement. Thanks.