What is the error you're getting exactly when you try to copy the "_nds" folder? Like Robz8 said, an error that is causing the "_nds" folder to not be copyable is a huge sign that it may be the culprit for TWLMenu++ not starting.Thanks so much for helping! So when backing up my SD card, windows won’t let me copy and paste the “_nds” folder. Could that mean that there is an error? Is it safe to delete the “_nds” folder?