Programming an Arduino Mega and a Mega Sensor Shield V2 for use in a Hexapod

Ok I changed to Arduino.h
so now I get this errors
CDS5500_2Serials.cpp: In member function 'void CDS5500_2Serials::WritePos(int, int, int)':
CDS5500_2Serials.cpp:31: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp:44: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp: In member function 'void CDS5500_2Serials::SetID(int, int)':
CDS5500_2Serials.cpp:63: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp:72: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp: In member function 'void CDS5500_2Serials::SetAngleLimit(int, int, int)':
CDS5500_2Serials.cpp:90: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp: In member function 'void CDS5500_2Serials::SyncWritePos(int*, int, int*, int)':
CDS5500_2Serials.cpp:127: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp:149: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp: In member function 'void CDS5500_2Serials::SyncWritePos(int*, int, int*, int*)':
CDS5500_2Serials.cpp:192: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp:214: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp: In member function 'int CDS5500_2Serials::ReadPos(int)':
CDS5500_2Serials.cpp:243: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp:261: error: 'class HardwareSerial' has no member named 'writeln'
CDS5500_2Serials.cpp:267: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp:278: error: invalid conversion from 'int' to 'const uint8_t*'
CDS5500_2Serials.cpp:278: error: initializing argument 1 of 'virtual size_t Print::write(const uint8_t*, size_t)'
CDS5500_2Serials.cpp: In member function 'void CDS5500_2Serials::Reset(int)':
CDS5500_2Serials.cpp:290: error: 'INT' was not declared in this scope
CDS5500_2Serials.cpp: In member function 'void CDS5500_2Serials::SetTempLimit(int, int)':
CDS5500_2Serials.cpp:300: error: 'INT' was not declared in this scope