Hi, I am using microsoft visual studio 8. I have built a QT project and everything was working and compiling well and then all of a sudden I get the following linkage errors:

1>Deleting intermediate and output files for project 'MarkovPro', configuration 'Debug|Win32'
1>Rcc'ing markovpro.qrc...
1>RCC: Warning: No resources in '\\sm3apnas05\users\j\JOSEPH.BE\PRIVATE\QT\MarkovPro\MarkovPro\markovpro.qrc'.
1>Uic'ing markovpro.ui...
1>Moc'ing markovpro.h...
1>Compiling...
1>markovpro.cpp
1>main.cpp
1>csvParser.cpp
1>csv.cpp
1>Generating Code...
1>Compiling...
1>qrc_markovpro.cpp
1>Linking...
1>markovpro.obj : error LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall MarkovPro::metaObject(void)const " (?metaObject@MarkovPro@@UBEPBUQMetaObject@@XZ)
1>markovpro.obj : error LNK2001: unresolved external symbol "public: virtual void * __thiscall MarkovPro::qt_metacast(char const *)" (?qt_metacast@MarkovPro@@UAEPAXPBD@Z)
1>markovpro.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall MarkovPro::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@MarkovPro@@UAEHW4Call@QMetaObject@@HPAPAX@Z)
1>markovpro.obj : error LNK2001: unresolved external symbol "public: static struct QMetaObject const MarkovPro::staticMetaObject" (?staticMetaObject@MarkovPro@@2UQMetaObject@@B)
1>\\sm3apnas05\Users\j\JOSEPH.BE\PRIVATE\QT\MarkovPro\Debug\MarkovPro.exe : fatal error LNK1120: 4 unresolved externals
1>Build log was saved at "file://\\sm3apnas05\users\j\JOSEPH.BE\PRIVATE\QT\MarkovPro\MarkovPro\Debug\BuildLog.htm"
1>MarkovPro - 5 error(s), 0 warning(s)