Not sure whether I'm having a disc issue or a player issue

[syncguy]

It appears that the problem is with the disk. However, you may have issues with the laptop as well. Since you say the disk worked fine on the PS3, the disk is playable on a good quality player like PS3.

Although the other disks worked on the laptop previously, this disk didn't work properly. So, this disk must have problems and laptop player also probably not tolerating errors. So laptop is giving problems for this disk but not the others.

Perhaps you need to do some more testing on both PS3 and the laptop. This disk as well as the other disks.