It's just a dumper but green light
it is an error?
look:
http://redump.org/disc/5448/
http://redump.org/disc/5024/
- Xayox
- Dumper
- Offline
- RiMMER
- Dumper
- Offline
well, not necessarily. Look at this example. I dumped the game from 2 different discs so ... it's green 
- Xayox
- Dumper
- Offline
Ahaaa
1 Dumper + 2 Different discs = Green Light
OK 
- fuzzball
- Dumper
- Offline
http://redump.org/disc/16102/
2 dumps, but blue light 
- fuzzball
- Dumper
- Offline
more...
http://redump.org/disc/4042/
http://redump.org/disc/4043/
http://redump.org/disc/14175/
http://redump.org/disc/8279/
http://redump.org/disc/7242/
http://redump.org/disc/11317/
http://redump.org/disc/8298/
http://redump.org/disc/11166/
http://redump.org/disc/10881/
http://redump.org/disc/10200/
http://redump.org/disc/3774/
http://redump.org/disc/5992/
http://redump.org/disc/12635/
http://redump.org/disc/4040/
http://redump.org/disc/7703/
http://redump.org/disc/6941/
http://redump.org/disc/9545/
http://redump.org/disc/2613/
- amarok
- Dumper
- Offline
Great, thanks all added.