Sorry, I dont have a "known" clue, or resolve, but, I do have three possible ideas / hypothesis on them:

( 1 ) is k3b dieing on a same file, or folder ( possibly corrupted ) -=- Can you "copy" the data to your own "native" Linux folder and use k3b on that ?
( 2 ) could your temp ( or tmp ) folders be overflowing. k3b could be dieing because of not having enough temp storage space to perform the task ?
( 3 ) when this happens, does dmesg report problems in the logs, or possibly with the drive, or in the system logs ?

I have used k3b, for data, and audio CD's, and sometimes its just "finicky". Most of the time, the first time I run it on a new system, it just locks up, or closes with a crash, but, after that, it seems to work just fine. I have found that k3b is not very tollerant of disk, or disc, errors, and will simply crash when it encounters a problem. Possibly use dd ?

Sorry I cant be of more help, I am only guessing here. I dont have any Windows installs, or drives, anymore, only Linux file systems. But, hopefully, I can give some assistance

Ms. Cuddles