According to the screenshot you linked to, gparted is telling you:
ntfs_mst_post_read_fixup_warn: magic: 0x44414142 size: 1024 usa_ofs: 24474 usa_count: 46079: Invalid argument
Record 0 has no FILE magic (0x44414142)
Failed to load $MFT: Input/output error
Failed to mount '/dev/sdc1': Input/output error
NTFS is inconsistent. Run chkdsk /f on Windows then reboot it TWICE!
The usage of the /f parameter is very IMPORTANT! No modification was made to NTFS by this software.
Unable to read the contents of this file system! Because of this some operations may be unavailable. The cause might be a missing software package. The following list of software packages is required for ntfs file system support: ntfsprogs / ntfs-3g.
This appears to me to be clear signs of file system corruption. Maybe the disk was unplugged before the system had finished writing data to it, or maybe there is some physical problem with the disk itself. The latter can happen if the disk is exposed to sudden vibration or accelleration while working.
You'll also notice that the warning message gives you a clear course of action: "Run chkdsk /f on Windows then reboot it TWICE!"
I would recommend that you do that, and once you have done that, retry the operation. If it still doesn't work, consider copying the data elsewhere, reformatting the partition and copying the data back onto it. Remember that Linux NTFS support is still somewhat spotty and may have rough edges; for interoperability, unless you absolutely need the ability to store files >4GiB in size, you're probably better off using FAT32.