Double check the name of your memory regions (in the Memory Configuration Editor) against the values in the "Extra linker script input sections" fields. It looks to me like you probably have a mismatch.
If you use the dropdown in the "Extra linker script input sections", the IDE displays the available set of memory region names, at that point in time. But if you then edit the memory region names, things can get out of step unless you reselect.
Hope this helps!