Confirmed. For me there is the same problem.
Arduino 1.8.7 Win 10.
Arduino 1.8.7 Win 10.
Code:
WeatherDuino_P2ESP8266_RX_v2.0_b001:40:22: error: pgmspace.h: No such file or directory
compilation terminated.
exit status 1
pgmspace.h: No such file or directory
