root@tempnet:~/Desktop/UnityMasterServer# make g++ -c -Wall -I. -ICommon -DUNITY_MASTERSERVER RakNet/Sources/NetworkIDObject.cpp -o RakNet/Sources/NetworkIDObject.o In file included from RakNet/Sources/NetworkIDManager.h:11:0, from RakNet/Sources/NetworkIDObject.cpp:9: RakNet/Sources/DS_BinarySearchTree.h: In instantiation of ‘void DataStructures::AVLBalancedBinarySearchTree::BalanceTree(typename DataStructures::BinarySearchTree::node*, bool) [with BinarySearchTreeType = NetworkIDNode; typename DataStructures::BinarySearchTree::node = DataStructures::BinarySearchTree::node]’: RakNet/Sources/DS_BinarySearchTree.h:219:3: required from ‘void DataStructures::AVLBalancedBinarySearchTree::Del(const BinarySearchTreeType&) [with BinarySearchTreeType = NetworkIDNode]’ RakNet/Sources/NetworkIDObject.cpp:43:72: required from here RakNet/Sources/DS_BinarySearchTree.h:169:5: error: ‘Height’ was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation [-fpermissive] RakNet/Sources/DS_BinarySearchTree.h:169:5: note: declarations in dependent base ‘DataStructures::BinarySearchTree’ are not found by unqualified lookup RakNet/Sources/DS_BinarySearchTree.h:169:5: note: use ‘this->Height’ instead RakNet/Sources/DS_BinarySearchTree.h:174:5: error: ‘Height’ was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation [-fpermissive] RakNet/Sources/DS_BinarySearchTree.h:174:5: note: declarations in dependent base ‘DataStructures::BinarySearchTree’ are not found by unqualified lookup RakNet/Sources/DS_BinarySearchTree.h:174:5: note: use ‘this->Height’ instead RakNet/Sources/DS_BinarySearchTree.h:202:4: error: ‘FindParent’ was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation [-fpermissive] RakNet/Sources/DS_BinarySearchTree.h:202:4: note: declarations in dependent base ‘DataStructures::BinarySearchTree’ are not found by unqualified lookup RakNet/Sources/DS_BinarySearchTree.h:202:4: note: use ‘this->FindParent’ instead make: *** [RakNet/Sources/NetworkIDObject.o] Error 1