error trying to compile marlin firmware

I am trying to compile the marlin firmware for my 3d printer but i am getting the following error ??

Marlin_main.cpp.o: In function process_commands()': C:\Users\Nikki\AppData\Local\Temp\build7552550939919893003.tmp/Marlin_main.cpp:5407: undefined reference to Config_ResetDefault()'
Marlin_main.cpp.o: In function Config_RetrieveSettings': /configuration_store.h:19: undefined reference to Config_PrintSettings(bool)'
/configuration_store.h:19: undefined reference to Config_ResetDefault()' Marlin_main.cpp.o: In function gcode_M503':
C:\Users\Nikki\AppData\Local\Temp\build7552550939919893003.tmp/Marlin_main.cpp:4582: undefined reference to Config_PrintSettings(bool)' Marlin_main.cpp.o: In function Config_RetrieveSettings':
/configuration_store.h:19: undefined reference to Config_ResetDefault()' /configuration_store.h:19: undefined reference to Config_PrintSettings(bool)'
ultralcd.cpp.o: In function lcd_control_menu': C:\Users\Nikki\AppData\Local\Temp\build7552550939919893003.tmp/ultralcd.cpp:830: undefined reference to Config_ResetDefault()'

I am trying to compile the marlin firmware

You have posted no code, and no links to the libraries. Therefore you haven't much hope of getting help.

Thanks I was very tired when i posted and should have known better. Here is a link to the firmware i am using the "Hephestos" config files in the example_configurations folder.

thanks Nikki

So, where did you put the two files in that folder? They need to overwrite the two in the libraries\Marlin folder, not be left several levels deeper.

I did move them and over write the original files

I tried downloading the Marlin library. It expects to be the only library downloaded. I gave up trying to make it compile.

Perhaps you'll have better luck by doing creating a new sketch folder and putting the Marlin library there. Don't download any other libraries into that sketch folder.