For reasons that escape me, you decided to update to 4.3. Even though it is not recommended and even though there have not been any new features since 4.1. Updating can damage your softmod, causing problems like the ones you describe. I recommend you follow the softmod any wii guide (link in my signature), to make sure everything is properly installed. You might need to reinstall d2x afterwards, but I believe it should fix your problems.