MegaCore Function Generation error(Dspbuilder)

[Altera_Forum]

These days I am doing some examples on dspbuilder, but I have met so many problems. Some have already sloved,some not. I post an problem here: 

 在Quartus II 7.2sp2 Web Edition中设计fir数字滤波器，当点击IP Toolbench中的Generate时，产生这样的错误:MegaCore Function Generation Error,IP Functionl simulation Model Creation Failed.The following error was returned:Error:specified license does not contain information requered to run the Quartus Ⅱ software.    How to slove it ? I need help!

[Altera_Forum]

有时候可以完成generation,有时候就会弹出上面的错误~~我不理解~~难道是我的License有问题吗？ MegaCore 需要另外再安装License吗?

[Altera_Forum]

--- Quote Start ---   MegaCore 需要另外再安装License吗?  --- Quote End ---     I doubt that you can use DSPBuilder together with the Quartus Web Edition. Maybe some other people on the forum could clarify this.    不好意思，请您用英文讨论。 

[Altera_Forum]

should be possible to do DSP Builder and Quartus II web edition: 

 http://www.altera.com/support/kdb/solutions/rd07262004_7122.html

[Altera_Forum]

sorry ,my english is poor. I have already tried my best to discription it in english.But I failed. Maybe I will use pictures to ask questions.  

Now i just want to say that my dspbuilder is very unstable.Sometimes it can generate FIR without any errors,sometimes it leads to the questions above. What can I do ? ~~~I hope that you can understand my meaning.

[Altera_Forum]

--- Quote Start ---  sorry ,my english is poor. I have already tried my best to discription it in english.But I failed. Maybe I will use pictures to ask questions.  Now i just want to say that my dspbuilder is very unstable.Sometimes it can generate FIR without any errors,sometimes it leads to the questions above. What can I do ? ~~~I hope that you can understand my meaning.  --- Quote End ---     用母语蛮好。把意思讲清楚就行了。再加一点英文说明。  Speaking our mother language, Chinese, is very good. Some related English to describe the problem you concerned is needed, too.