[vtkusers] Linker Error: undefined reference to `vtable !?!!!

[verena kinder]

Hello!

We have a problem with compiling a program:
 we get the message:
	Medical_my_5.o(.gnu.linkonce.t._ZN16vtkMyInteractionC1Ev+0x19): In function 		
	`vtkMyInteraction::vtkMyInteraction[in-charge]()':
	: undefined reference to `vtable for vtkMyInteraction'

Does anybody know whats the problem?

We send our files in the attachment

Thanks

Verena

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