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can't duplicate a project

 
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Hi,
I'm trying to copy a project to have a backup and mofiy my copy but I get:
"The project has one more external source roots and cannot be copied"

Someone could help me?

Thanks
 
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Hi David, have you ever heard of Git?

If you didn't, I'd recommend to start using it now, that is a very comfortable (and preferred) way to version your code.
 
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Please try new a project the same name , and then copy
 
david luis
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joseph hu wrote:Please try new a project the same name , and then copy



sorry I dont understand you.
You say that I go to File-->Create new project and put the same name.
I think that I can't put the same name.
 
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Definitely look into version control systems. Git is the popular one these days, but any of them would do.

Apparently in today's NetBeans you can build a project from more than one directory, unlike most systems where the entire project is usually under a single directory tree. And which is what version control systems prefer as well. So your attempt to copy is annoying NetBeans because that ability is evidently limited even in NetBeans.

I'd recommend collecting everything together so that there's only a single base directory for the project, so that NetBeans can copy without problems, but again, for backup purposes, the best thing to do is use version control like Liutauras said.
 
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