Some ERROR in Print.h..

[sangko-dgq]

..\Libs\ArduinoAPI\Printable.h(25): error: #20: identifier "class" is undefined
..\Libs\ArduinoAPI\Printable.h(34): error: #65: expected a ";"
..\Libs\ArduinoAPI\Print.h(66): error: #147-D: declaration is incompatible with "size_t println(const char *)" (declared at line 65)
..\Libs\ArduinoAPI\Print.h(67): error: #147-D: declaration is incompatible with "size_t println(uint8, int)" (declared at line 65)
..........