Hi all, I have had 100% success rate, (100+ bd-r's)with Optical Quantum 25gb bd-r's. However, I just got into the bd-r dl mode so I can put a full season of a tv series onto 1 bd-r dl. I've ripped every episode of a season and converted it to blu ray format with Nero12 on my hard drive. I purchased the Optical Quantum 50gb bd-r dl's, thinking that because the 25gb bd-r's worked, the 50's should work. Well now I have 4 (out of the 10) coasters and am wary about trying the other 6. I've tried Nero12 burningROM which keeps giving me an error stating disc failed "Could not perform end of disc at once" I then tried the reliable IMGburn which had failed me for the 1st time with log stating "Failed to write sectors 32-63 - Reason: Error" It then Retried 20 times with "Reason: Invalid Address for Write" Is there something wrong with what I'm doing? Do I need to change any settings to get this to work? My drivers are all updated so it's not that. Thank you for your assistance, I appreciate it.