so you have an old SD card for you GC games?
I have no idea why nintendont is not working for you try posting a syscheck and use latest wiiflow/nintendont combo from my sig or masterpack 2016
As far as I know i'm using the latest, but Wiiflow won't update it just says backing up boot.dol then restarts. Here's my SysCheck HDE.
SysCheck v2.3.1 HacksDen Edition by JoostinOnline Double_A R2-D2199 and Nano
...runs on vIOS58 (rev 6176).
Region: NTSC-U
System Menu 4.3U (v513)
Priiloader installed
Drive date: 02.13.2007
Homebrew Channel 1.1.2 running on IOS58
Hollywood v0x11
Console Type: Wii
Shop Channel Country: United States (49)
Boot2 v4
Found 93 titles.
Found 49 IOS on this console. 13 of them are stub.
IOS4 (rev 65280): Stub
IOS9 (rev 1034): No Patches
IOS10 (rev 768): Stub
IOS11 (rev 256): Stub
IOS12 (rev 526): No Patches
IOS13 (rev 1032): No Patches
IOS14 (rev 1032): No Patches
IOS15 (rev 1032): No Patches
IOS16 (rev 512): Stub
IOS17 (rev 1032): No Patches
IOS20 (rev 256): Stub
IOS21 (rev 1039): No Patches
IOS22 (rev 1294): No Patches
IOS28 (rev 1807): No Patches
IOS30 (rev 2816): Stub
IOS31 (rev 3608): No Patches
IOS33 (rev 3608): No Patches
IOS34 (rev 3608): No Patches
IOS35 (rev 3608): No Patches
IOS36 (rev 3608 Info: rev 3351): Trucha Bug ES Identify NAND Access
IOS37 (rev 5663): No Patches
IOS38 (rev 4124): No Patches
IOS40 (rev 3072): Stub
IOS41 (rev 3607): No Patches
IOS43 (rev 3607): No Patches
IOS45 (rev 3607): No Patches
IOS46 (rev 3607): No Patches
IOS48 (rev 4124): No Patches
IOS50 (rev 5120): Stub
IOS51 (rev 4864): Stub
IOS52 (rev 5888): Stub
IOS53 (rev 5663): No Patches
IOS55 (rev 5663): No Patches
IOS56 (rev 5662): No Patches
IOS57 (rev 5919): No Patches
IOS58 (rev 6176): USB 2.0
IOS60 (rev 6400): Stub
IOS61 (rev 5662): No Patches
IOS62 (rev 6430): No Patches
IOS70 (rev 6912): Stub
IOS80 (rev 6944): No Patches
IOS202[60] (rev 65535 Info: hermes-v5.1): Trucha Bug NAND Access USB 2.0
IOS222[38] (rev 65535 Info: hermes-v5.1): Trucha Bug ES Identify NAND Access USB 2.0
IOS223[37] (rev 65535 Info: hermes-v5.1): Trucha Bug NAND Access USB 2.0
IOS236[36] (rev 65535 Info: rev 3351): Trucha Bug ES Identify NAND Access
IOS239[58] (rev 65535 Info: d2x-v10beta52): Trucha Bug NAND Access USB 2.0
IOS249[37] (rev 21004 Info: d2x-v4): Trucha Bug NAND Access USB 2.0 (this may actally just be regular IOS249)
IOS250[57] (rev 65535 Info: d2x-v10beta52): Trucha Bug NAND Access USB 2.0
IOS254 (rev 65280): Stub
BC v6
MIOS v4 (DIOS MIOS 2.10)
Report generated on 06/14/2016.
Acutally, I have a copy of the Wiiflow MasterPack on both my SD and my USB, but I usually load it from the SD. But the game is on the USB.