Hacking Black screen error when entering data management

[yacepi15]

When i access to my usb in data management, there appears a black screen saying that the USB cannot be accessed. I tried to dump a save with Saviine a few moments ago, but the console was unmodified. There is something i can do or im fucked?
Thanks.

 

[ThatNintendoNerd]

Bad USB maybe? I have never used Saviine or anyone having this issue. Try a different port, and the one in the back

 

[yacepi15]

Bad USB maybe? I have never used Saviine or anyone having this issue. Try a different port, and the one in the back

The Splatoon gave a 101-9999 error, i tried to extract the save before formatting the USB. I recovered the another saves with this tool.
PS: Dumping Hyrule Warriors save, i entered in the wrong account and that account doesnt have a save. Saviine-server only triggered an error, nothing important.

 

[Deleted User]

It's a known bug , the only risk currently to do Wii U hacking