Error: Port "i1" does not exist in primitive "nand2" of instance "g2"

[Altera_Forum]

I have some problem using quartus ii 11  

 my code is:     I get the following errors:   Error: Port "i1" does not exist in primitive "nand2" of instance "g2" Error: Port "i2" does not exist in primitive "nand2" of instance "g2" Error: Port "o1" does not exist in primitive "nand2" of instance "g2" Error: Can't elaborate top-level user hierarchy Error: Quartus II Analysis & Synthesis was unsuccessful. 4 errors, 8 warnings   can anybody help me?

[Altera_Forum]

--- Quote Start ---  I have some problem using quartus ii 11   my code is:     I get the following errors:   Error: Port "i1" does not exist in primitive "nand2" of instance "g2" Error: Port "i2" does not exist in primitive "nand2" of instance "g2" Error: Port "o1" does not exist in primitive "nand2" of instance "g2" Error: Can't elaborate top-level user hierarchy Error: Quartus II Analysis & Synthesis was unsuccessful. 4 errors, 8 warnings   can anybody help me?  --- Quote End ---    Hi,  I did not see any code of you. I assume you have a name mismatch between the NAND itself and the instanciation of the NAND.  Kind regards  GPK