Arduino:1.8.2 (Windows 7), Tarjeta:"Arduino/Genuino Uno"

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries D:\Usuario\Desktop\LDMICRO\arduino ladder.h 4\pruebaa\libraries -fqbn=arduino:avr:uno -ide-version=10802 -build-path C:\Users\Usuario\AppData\Local\Temp\arduino_build_624684 -warnings=none -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose D:\Usuario\Desktop\LDMICRO\PARKER_src\ARDUINO\parker 7seg\ladder.h
C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries D:\Usuario\Desktop\LDMICRO\arduino ladder.h 4\pruebaa\libraries -fqbn=arduino:avr:uno -ide-version=10802 -build-path C:\Users\Usuario\AppData\Local\Temp\arduino_build_624684 -warnings=none -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose D:\Usuario\Desktop\LDMICRO\PARKER_src\ARDUINO\parker 7seg\ladder.h
Using board 'uno' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr
Using core 'arduino' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr
Detecting libraries used...
"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics  -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10802 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR   "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Users\Usuario\AppData\Local\Temp\arduino_build_624684\sketch\ladder.h.cpp" -o "nul"
"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics  -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10802 -DARDUINO_AVR_UNO -DARDUINO_ARCH_AVR   "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\standard" "C:\Users\Usuario\AppData\Local\Temp\arduino_build_624684\sketch\ladder.h.cpp" -o "C:\Users\Usuario\AppData\Local\Temp\arduino_build_624684\preproc\ctags_target_for_gcc_minus_e.cpp"
In file included from D:\Usuario\Desktop\LDMICRO\PARKER_src\ARDUINO\parker 7seg\parker 7seg.ino:6:0:

C:\Users\Usuario\AppData\Local\Temp\arduino_build_624684\sketch\parker 7seg.h:7:20: fatal error: ladder.h: No such file or directory

 #include "ladder.h"

                    ^

compilation terminated.

exit status 1
Error compilando para la tarjeta Arduino/Genuino Uno.