Thank you.
Thank you for your Informations and your sysCheck.It looks all fine and ok.
For your HDD I am pretty sure you meant NTFS.
It is also ok.
Very nice.
It makes it now a little harder to find the Issue....all your Points on the Checklist are ok.
Did your other downloaded Games are working ?
So maybe some Things you can try if you like:
If you have (and I am sure you have) the Priiloader installed,did you also have installed the Forwarder Channel for the USBLoader GX or did you boot the Loader directly from the Homebrew Channel ?
You said it shows sometimes a "DSi Error Message" when you start the Loader....
You can maybe try and delete the Setting File in the "apps/usbloader_gx" Folder or completely delete and download/install it again.Maybe some File(s) are corrupted...
Please do not use the Update Option,make the Installation manually please.
I do not really think it has to do with the Version/Release but to get sure,please be so kind and also try r1271 or r1268.
Good Luck.
Thank you.