Hi. If you could try use understandable language in your post it might be easier to help.
I'm sorry the slider is not working for you. I don't understand by what you mean by 'upload images to a new folder'. This doesn't work with the slider. To get custom images to work, you must change the settings titled 'Get Images From?' to Custom Images. Next in the custom images tab, use the 'Upload Image' button to upload an image. Once uploaded, click 'Insert into post' and then make sure you click 'Save Changes'. Then repeat the process to add more images. It really is quite simple when you read the instructions.
If you wish to use images from posts within All or a certain category, use custom fields with the name 'Easing' and paste the images link into the value field.