Hi there,<br><br>I have installed the itk toolkit, runned succesfully the helloworld example,<br>but I have problems in running the registration examples.<br>Errors appear in the compiler (Microsoft Visual C++&nbsp; 6).<br>I have copied below the output window of the debugging process
<br><br><h3>Output Window</h3>
Compiling...
ImageRegistration13.cxx
Linking...
   Creating library Debug/ImageRegistration13.lib and object Debug/ImageRegistration13.exp
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;public: void __thiscall itk::Optimizer::SetScales(class itk::Array const &amp;)&quot; (?SetScales@Optimizer@itk@@QAEXABV?$Array@N@2@@Z)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;protected: virtual void __thiscall itk::RegularStepGradientDescentOptimizer::StepAlongGradient(double,class itk::Array const &amp;)&quot; (?StepAlongGradient@
RegularStepGradientDescentOptimizer@itk@@MAEXNABV?$Array@N@2@@Z)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;protected: virtual void __thiscall itk::RegularStepGradientDescentBaseOptimizer::AdvanceOneStep(void)&quot; (?AdvanceOneStep@RegularStepGradientDescentBaseOptimizer@itk
@@MAEXXZ)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;public: virtual void __thiscall itk::SingleValuedNonLinearOptimizer::SetCostFunction(class itk::SingleValuedCostFunction *)&quot; (?SetCostFunction@
SingleValuedNonLinearOptimizer@itk@@UAEXPAVSingleValuedCostFunction@2@@Z)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;protected: virtual void __thiscall itk::Optimizer::SetCurrentPosition(class itk::Array const &amp;)&quot; (?SetCurrentPosition@Optimizer@itk@@MAEXABV?$Array@N
@2@@Z)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;public: virtual void __thiscall itk::RegularStepGradientDescentBaseOptimizer::StartOptimization(void)&quot; (?StartOptimization@RegularStepGradientDescentBaseOptimizer@itk
@@UAEXXZ)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;public: virtual void __thiscall itk::Optimizer::SetInitialPosition(class itk::Array const &amp;)&quot; (?SetInitialPosition@Optimizer@itk@@UAEXABV?$Array@N
@2@@Z)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;protected: virtual void __thiscall itk::RegularStepGradientDescentBaseOptimizer::PrintSelf(class std::basic_ostream &gt; &amp;,class itk::Indent)const &quot; (?PrintSelf@
RegularStepGradientDescentBaseOptimizer@itk@@MBEXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@VIndent@2@@Z)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;protected: __thiscall itk::RegularStepGradientDescentBaseOptimizer::RegularStepGradientDescentBaseOptimizer(void)&quot; (??0RegularStepGradientDescentBaseOptimizer@itk@@
IAE@XZ)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;protected: virtual void __thiscall itk::SingleValuedNonLinearOptimizer::PrintSelf(class std::basic_ostream &gt; &amp;,class itk::Indent)const &quot; (?PrintSelf@
SingleValuedNonLinearOptimizer@itk@@MBEXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@VIndent@2@@Z)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;protected: virtual void __thiscall itk::Optimizer::PrintSelf(class std::basic_ostream &gt; &amp;,class itk::Indent)const &quot; (?PrintSelf@Optimizer@itk
@@MBEXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@VIndent@2@@Z)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;protected: __thiscall itk::Optimizer::Optimizer(void)&quot; (??0Optimizer@itk@@IAE@XZ)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;protected: __thiscall itk::SingleValuedNonLinearOptimizer::SingleValuedNonLinearOptimizer(void)&quot; (??0SingleValuedNonLinearOptimizer@itk@@IAE@XZ
)
ImageRegistration13.obj : error LNK2001: unresolved external symbol &quot;protected: virtual void __thiscall itk::CostFunction::PrintSelf(class std::basic_ostream &gt; &amp;,class itk::Indent)const &quot; (?PrintSelf@CostFunction@itk
@@MBEXAAV?$basic_ostream@DU?$char_traits@D@std@@@std@@VIndent@2@@Z)
Debug/ImageRegistration13.exe : fatal error LNK1120: 14 unresolved externals
Error executing link.exe.



<br><br><br><br>PS. I couldn&#39;t find the Itk.sln file in the binary directory when I installed Itk. Coult it be the problem<br>I have CMake2.4 and InsightToolkit-3.4.0<br>