Help me please! I want to know the reason of this error:

Xap packaging failed. Access to the path '..\Applications\User\Search\obj\Debug\XapCache\Search.dll' is denied.

 
Thanks! 

Can you try this:

1. Disable your indexer (kill the process cisvc.exe)

Let me know if that fixed it for you.

Also, what OS are you running on?

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Thanks,
Mike Snow
Blog : Silverlight Tips of the Day

 Also, make sure that no process is holding on this dll. Check that there are no iexplore.exe processes running your app.

If this answers your question, please click on "Mark as Answer" on this post.

 It's works when I use your solution. Thank mike.snow so much