I downloaded V1.2 and compiled it for a Mega. It failed on three libraries that I was missing and I copied those libraries from the libraries supplied with V1.2:
openGLCD
Adafruit_BNO055
Encoder
After that the code compiled although it threw plenty of warnings (not related to Wire).
I noticed that the I2Cdev library was also supplied with V1.2; did you do anything with that library? If so, what? I do not have that library installed (and did not copy it) and it might be the cause of your problem.
Can you check Wire.cpp for the presence of the following two functions
uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity)
{
return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)true);
}
uint8_t TwoWire::requestFrom(int address, int quantity)
{
return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)true);
}
and Wire.h for the presence of
uint8_t requestFrom(uint8_t, uint8_t);
uint8_t requestFrom(int, int);
I suspect that the second function in Wire.cpp and the second line in Wire.h are missing.