Need help::: Error: Node instance "XXX" instantiates undefined entity "XXX"

[Altera_Forum]

Hi all, 

I am using nios processor to controll the userlogic(verilog) for my project.I have little experience with schematic entry. so I have created the symbol from the verilog code and I have connected both systems. When I try to compile my design I am getting this kind of errors.  Error: Node instance "onchip_mem" instantiates undefined entity "processor18_onchip_mem" Error: Node instance "cpu18" instantiates undefined entity "processor18_cpu18" Error: Node instance "jtag_uart18" instantiates undefined entity "processor18_jtag_uart18"  Those are just examples I am getting 64 errors(for each part I have used in processor ).Is there anyone having idea about this error.  My final design should work exactly like as you see in the picture.

[Altera_Forum]

Sorry for the previous post, 

 I forgot to add .qip file to my project.But still I have a problem.If you see the schematic you will find a bidirectional bus (data_pio_external to port_0_io ).Is it proper way of connecting bidirectional nodes.Because I am getting some Error: Port "port_0_io[0]" does not exist in macrofunction "inst".

[Altera_Forum]

You should only use bidirectional signals when connecting to i/o ports of the FPGA. Signals inside the FPGA can only go in one direction. I don't think Quartus can synthesize an internal bidirectional bus, it will probably stop with a multiple drivers error.

[Altera_Forum]

--- Quote Start ---  Sorry for the previous post,  I forgot to add .qip file to my project.But still I have a problem.If you see the schematic you will find a bidirectional bus (data_pio_external to port_0_io ).Is it proper way of connecting bidirectional nodes.Because I am getting some Error: Port "port_0_io[0]" does not exist in macrofunction "inst".  --- Quote End ---   " i am facing same problem for compilation, but i can't understang what the .qip file is and how to add it to project. please help."

[Altera_Forum]

Hi sarath  

were you able to solve your problem with this Error (12006): Node instance "xxxx" instantiates undefined entity "xxxx" ? If you did, could you please explain how did you manage it?  Thanks

[Altera_Forum]

This error means that you don't set you own library, yet. Go to assignments >> settings >> library (category field) >> add your library path, then apply it.