It's not about your LDM structure, your physical disk configuration is:
2014-04-28T14:31:21.656+01:00 [03100 info 'Default'] Disk signature found 3831476155, disk size in sectors 976773168, sector size 512
2014-04-28T14:31:21.656+01:00 [03100 info 'Default'] Partition type found type SFS/LDM(66)/'SFS/LDM' start:63 size:106494822 active primary
2014-04-28T14:31:21.656+01:00 [03100 info 'Default'] Partition type found type SFS/LDM(66)/'SFS/LDM' start:106494885 size:870273180 primary
2014-04-28T14:31:21.703+01:00 [03100 info 'Default'] Disk signature found 2946843967, disk size in sectors 488397168, sector size 512
2014-04-28T14:31:21.703+01:00 [03100 info 'Default'] Partition type found type SFS/LDM(66)/'SFS/LDM' start:63 size:106494822 active primary
2014-04-28T14:31:21.703+01:00 [03100 info 'Default'] Partition type found type SFS/LDM(66)/'SFS/LDM' start:106494885 size:381897180 primary
And you can see that on both disks' first partition is active (i.e. bootable) and this situation confuses the Converter.
You must find a way to clear active bit on your second disk, and this should fix the issue.
Try DiskPart and 'inactive' command (select disk 1; select partition 1; detail partition - should see Active - Yes; inactive; detail partition - Active - No)
HTH