XTpye+ is a Nintendo Web Framework game. I had a lot of problems with dumping the /vol/code of those during my tests. They are often freezing during rpx dumping or during dumping the dynamic rpls (while you are playing the game).
What you describe as "begin with code then content then he return to dump code" are the mentioned dynamic rpls.
They get loaded when they are needed, so for a full dump you have to start the game and also go around the menu and start the game and so on.
Also, "(black screen with "problem with the wiiu memory" )" is not very helpful. The Error code is more important. You can see what kind of problem it is (rpl missing etc).