I've upgraded my siggen with a reset of all options to default.

For some chars i'Ve uploaded custom backgrounds and char images.
I'm able to delete these images via "Delete User Images" (they are all listed there), but i can't re-assign them to a sig or avatar.

Is there another option to do this beside deleting and re-uploading?

The images are based on the name of the character
Name the images to the name of the character you want it assigned to

I'll keep this in mind for my re-write of siggen