People that can play Blu-ray in the new PowerDVD 3730 are makin them with the READ option in Imgburn directly from the bd-disk, then you get a UDF 2.5 ISO.
When it does not work in PwrDVD 3730 is when you are using the BUILD option in Imgburn and making the ISO from the hardrive, this will only produce a UDF 1.02 ISO and is not playable with Power DVD 3730.
Maybe next version of Imgburn (2.4.0.0) will also produce UDF 2.5 with BUILD option then it should be OK with PowerDVD 3730.
When it does not work in PwrDVD 3730 is when you are using the BUILD option in Imgburn and making the ISO from the hardrive, this will only produce a UDF 1.02 ISO and is not playable with Power DVD 3730.
Maybe next version of Imgburn (2.4.0.0) will also produce UDF 2.5 with BUILD option then it should be OK with PowerDVD 3730.