thank you all, but its still the problem.
i deleted everything, even the temporary files.
i installed everything (arduinoIDE + mysensors 1.5). everythin works until i comment the softSPI in.
then it reports: the DigitalIO.h error-.
Arduino: 1.6.5 (Mac OS X), Platine: "Arduino Pro or Pro Mini, ATmega328 (3.3V, 8 MHz)"
Verwende die Bibliothek SPI im Ordner: /Applications/Arduino.app/Contents/Java/hardware/arduino/avr/libraries/SPI
Verwende die Bibliothek MySensors im Ordner: /Users/-------/ArduinoNEW/libraries/MySensors (legacy)
/Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avr-g++ -c -g -Os -Wall -Wextra -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -mmcu=atmega328p -DF_CPU=8000000L -DARDUINO=10605 -DARDUINO_AVR_PRO -DARDUINO_ARCH_AVR -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/cores/arduino -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/variants/eightanaloginputs -I/Applications/Arduino.app/Contents/Java/hardware/arduino/avr/libraries/SPI -I/Users/----/ArduinoNEW/libraries/MySensors /var/folders/ts/_xf3xpf1769419gyjrkmv7yc0000gn/T/build8452403048590699508.tmp/LightSensor.cpp -o /var/folders/ts/_xf3xpf1769419gyjrkmv7yc0000gn/T/build8452403048590699508.tmp/LightSensor.cpp.o
In file included from /Users/-----/ArduinoNEW/libraries/MySensors/MyTransportNRF24.h:26:0,
from /Users/----/ArduinoNEW/libraries/MySensors/MySensor.h:28,
from LightSensor.ino:30:
/Users/----/ArduinoNEW/libraries/MySensors/utility/RF24.h:20:23: fatal error: DigitalIO.h: No such file or directory
#include <DigitalIO.h>
^
compilation terminated.
Fehler beim Kompilieren.
then i checked /Users/----/ArduinoNEW/libraries/ AND
/Users/----/ArduinoNEW/libraries/DigitalIO/
for the DigitalIO.h ==> IN BOTH EXISTS DigitalIO.h because i copied it for testing.
that is so strange ...