I recieve "cant find port <name>in design".

hi;

when simulating my design in Quartus I recieve "cant find port <name> in design.

alteras help said:

CAUSE:

You specified a node in the vector source file (http://quartushelp.altera.com/12.0/mergedprojects/reference/glossary/def_source_vec.htm), but the Quartus II software cannot find the specified port in the top level design in the current Quartus II project.

ACTION:

Either remove the node from the Waveform Editor, or change the name, width, or direction of the port to match a similar port in the top level design.

but this didnt help me.

what should I do?