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Errors of sys generating in SOPC Builder

Altera_Forum
Honored Contributor II
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Nodes of "Altpll" are missing source Files including all PINs, showing in the following image. 

https://www.alteraforum.com/forum/attachment.php?attachmentid=6941  

I‘ve rebuilt the whole project completely as the demonstration-DE2_115_SD_Card_Audio_Player, but it doesn't work.  

I wander why the altpll couldn't work in this setting and which step I can take to detect my problems.
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