Yeah.. when I compile it without adding anything it works perfectly... but when I add an element it throws the following errors:

• Error    2    error LNK2019: unresolved external symbol "public: __thiscall Element_NEMR::Element_NEMR(void)" (??0Element_NEMR@@QAE@XZ) referenced in function "class std::vector<class Element,class std::allocator<class Element> > __cdecl GetElements(void)" (?GetElements@@YA?AV?$vector@VElement@@V?$allocator@VElement@@@std@@@std@@XZ)    The-Powder-Toy-develop-2\Bowserinator's mod\The-Powder-Toy-master - Copy\ElementClasses.obj    tpt++
• Error    3    error LNK2019: unresolved external symbol "public: virtual __thiscall Element_NEMR::~Element_NEMR(void)" (??1Element_NEMR@@UAE@XZ) referenced in function "class std::vector<class Element,class std::allocator<class Element> > __cdecl GetElements(void)" (?GetElements@@YA?AV?$vector@VElement@@V?$allocator@VElement@@@std@@@std@@XZ)    The-Powder-Toy-develop-2\Bowserinator's mod\The-Powder-Toy-master - Copy\ElementClasses.obj    tpt++
  
  

Error    4    error LNK1120: 2 unresolved externals    The-Powder-Toy-develop-2\Bowserinator's mod\The-Powder-Toy-master - Copy\Debug\tpt++.exe    1    1    tpt++

Idk why I ran generator.py correctly.

Yeah I did

Thanks so much!