Tried to read exif data, maybe helps. I tried strace to see which file it was causing, it was first. But i moved it to desktop and run again. Second crashed shotwell too.

exiftool /media/7F31-D988/DCIM/100MEDIA/IMAG0001.jpg
ExifTool Version Number         : 8.15
File Name                       : IMAG0001.jpg
Directory                       : /media/7F31-D988/DCIM/100MEDIA
File Size                       : 1037 kB
File Modification Date/Time     : 2010:04:30 11:54:34+02:00
File Permissions                : rw-r--r--
File Type                       : JPEG
MIME Type                       : image/jpeg
Exif Byte Order                 : Big-endian (Motorola, MM)
Make                            : HTC
Camera Model Name               : HTC Desire
X Resolution                    : 72
Y Resolution                    : 72
Resolution Unit                 : inches
Y Cb Cr Positioning             : Centered
ISO                             : 100
Exif Version                    : 0220
Date/Time Original              : 2010:04:30 10:54:27
Create Date                     : 2010:04:30 10:54:27
Components Configuration        : Y, Cb, Cr, -
Flashpix Version                : 0100
Color Space                     : sRGB
Exif Image Width                : 2592
Exif Image Height               : 1552
Interoperability Index          : R98 - DCF basic file (sRGB)
Interoperability Version        : 0100
Compression                     : JPEG (old-style)
Thumbnail Offset                : 428
Thumbnail Length                : 22545
Data Length                     : 264
Preview Quality                 : 85
Image Width                     : 2592
Image Height                    : 1552
Encoding Process                : Baseline DCT, Huffman coding
Bits Per Sample                 : 8
Color Components                : 3
Y Cb Cr Sub Sampling            : YCbCr4:2:0 (2 2)
Image Size                      : 2592x1552
Thumbnail Image                 : (Binary data 22545 bytes, use -b option to extract)


ps@T61:~$ exiftool /media/7F31-D988/DCIM/100MEDIA/IMAG0002.jpg -A
ExifTool Version Number         : 8.15
File Name                       : IMAG0002.jpg
Directory                       : /media/7F31-D988/DCIM/100MEDIA
File Size                       : 701 kB
File Modification Date/Time     : 2010:02:04 17:41:28+01:00
File Permissions                : rw-r--r--
File Type                       : JPEG
MIME Type                       : image/jpeg
Exif Byte Order                 : Big-endian (Motorola, MM)
Make                            : HTC
Camera Model Name               : HTC Tattoo
Orientation                     : Horizontal (normal)
X Resolution                    : 72
Y Resolution                    : 72
Resolution Unit                 : inches
Software                        : Android 1.6
Y Cb Cr Positioning             : Centered
ISO                             : 100
Exif Version                    : 0220
Date/Time Original              : 2010:02:04 16:41
Create Date                     : 2010:02:04 16:41
Components Configuration        : Y, Cb, Cr, -
Flash                           : No Flash
Flashpix Version                : 0100
Color Space                     : sRGB
Exif Image Width                : 2048
Exif Image Height               : 1536
Interoperability Index          : R98 - DCF basic file (sRGB)
Interoperability Version        : 0100
White Balance                   : Auto
Compression                     : JPEG (old-style)
X Resolution                    : 72
Y Resolution                    : 72
Resolution Unit                 : inches
Thumbnail Offset                : 502
Thumbnail Length                : 3691
Data Length                     : 264
Preview Image Width             : 512
Preview Image Height            : 384
Preview Quality                 : 85
Image Width                     : 2048
Image Height                    : 1536
Encoding Process                : Baseline DCT, Huffman coding
Bits Per Sample                 : 8
Color Components                : 3
Y Cb Cr Sub Sampling            : YCbCr4:2:0 (2 2)
Image Size                      : 2048x1536
Thumbnail Image                 : (Binary data 3691 bytes, use -b option to extract)