Copying ext4 from one sd card to another larger card

My attempt to copy the ext4 part from  a 4GB SD Card to an 8GB  card.  Both known working installations of Noobs:

GParted 0.5.1

Libparted 2.2
Copy /dev/sdd6 to /dev/sdb (start at 1.33 GiB)  00:16:27    ( ERROR )

calibrate /dev/sdd6  00:00:00    ( SUCCESS )

path: /dev/sdd6
start: 2605056
end: 7841791
size: 5236736 (2.50 GiB)
check file system on /dev/sdd6 for errors and (if possible) fix them  00:00:04    ( SUCCESS )

e2fsck -f -y -v /dev/sdd6

Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information

82046 inodes used (50.08%)
104 non-contiguous files (0.1%)
90 non-contiguous directories (0.1%)
# of inodes with ind/dind/tind blocks: 0/0/0
Extent depth histogram: 65683/46
592784 blocks used (90.56%)
0 bad blocks
1 large file

59618 regular files
5618 directories
56 character device files
25 block device files
2 fifos
746 links
16715 symbolic links (16223 fast symbolic links)
3 sockets
--------
82783 files
e2fsck 1.41.11 (14-Mar-2010)
create empty partition  00:00:01    ( SUCCESS )

path: /dev/sdb6
start: 2795373
end: 8032499
size: 5237127 (2.50 GiB)
set partition type on /dev/sdb6  00:00:00    ( SUCCESS )

new partition type: ext4
copy file system of /dev/sdd6 to /dev/sdb6  00:16:22    ( ERROR )

using internal algorithm
copy 5236736 sectors
finding optimal blocksize

copy 65536 sectors using a blocksize of 64 sectors  00:00:14    ( SUCCESS )

65536 of 65536 copied
13.766 seconds
copy 65536 sectors using a blocksize of 128 sectors  00:00:13    ( SUCCESS )

65536 of 65536 copied
13.454 seconds
copy 65536 sectors using a blocksize of 256 sectors  00:00:16    ( SUCCESS )

65536 of 65536 copied
15.6453 seconds
copy 65536 sectors using a blocksize of 512 sectors  00:00:13    ( SUCCESS )

65536 of 65536 copied
13.1006 seconds
copy 65536 sectors using a blocksize of 1024 sectors  00:00:12    ( SUCCESS )

65536 of 65536 copied
11.8337 seconds
copy 65536 sectors using a blocksize of 2048 sectors  00:00:13    ( SUCCESS )

65536 of 65536 copied
12.8781 seconds
copy 65536 sectors using a blocksize of 4096 sectors  00:00:17    ( SUCCESS )

65536 of 65536 copied
16.8456 seconds
copy 65536 sectors using a blocksize of 8192 sectors  00:00:12    ( SUCCESS )

65536 of 65536 copied
11.9549 seconds
copy 65536 sectors using a blocksize of 16384 sectors  00:00:11    ( SUCCESS )

65536 of 65536 copied
11.8328 seconds
copy 65536 sectors using a blocksize of 32768 sectors  00:00:13    ( SUCCESS )

65536 of 65536 copied
12.504 seconds
copy 65536 sectors using a blocksize of 65536 sectors  00:00:11    ( SUCCESS )

65536 of 65536 copied
11.2049 seconds
optimal blocksize is 65536 sectors (32.00 MiB)
copy 4515840 sectors using a blocksize of 65536 sectors  00:13:57    ( ERROR )

2484224 of 4515840 copied
Error while writing block at sector 4761453
3205120 sectors copied
libparted messages    ( INFO )

Input/output error during write on /dev/sdb

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