USB Loader GX 2.3 and above not reconizing USB Flashdrive

My wii recently has stopped detecting my flash drives when loading USB Loader GX 2.3 or above. However, I tried using the one included in the WiiHackWii pack, and it loads my usb no problem, and so does wiiflow.

My usb flashdrives are partitioned to WBFS , each being 8gb. I have DarkCorp 1.1 installed.

Does anyone know what might be going on?

If it works with WiiFlow, then why not use WiiFlow?

Seeing that it works with WiiFlow means that it's not the Wii's fault.
It's USB Loader GX 2.3.

My opinion is just to wait for an update or see if an older version works.

It is probably a cIOS issue. Post a syscheck. I bet your cIOS are outdated...