Ok, so you’ve read the [getting started](http://projects.skurfer.com/QuicksilverPlug-inReference.mdown#getting_started) guide on how to write quicksilver plugins, and read the [QSApp Blog Post](http://blog.qsapp.com/post/47769690224/developing-plugins-for-quicksilver) about how to get started with QS plugins, and checked out the Quicksilver [Plugin Development Reference](https://github.com/quicksilver/PluginDevelopmentReference) and checked out the [repo of current plugins](https://github.com/quicksilver/?query=plugin) and visited the [Quicksilver Developer Wiki](http://qsapp.com/wiki/Developer_Information) and already referenced the [Quicksilver Plugin Reference](http://qsapp.com/wiki/Plugin_Reference) and read PJRobertson’s [Quicksilver Plugin Reference page](https://github.com/quicksilver/PluginDevelopmentReference/blob/master/QuicksilverPlug-inReference.mdown) and now you have got your new Xcode project all setup and when you click “build” you get something like:
QSFoundation/QSFoundation.h file not found – Building Quicksilver Plugins
###Here’s what to check
Make sure that in Xcode5 you have set up the SourceTrees in the preference pane – it’s under Locations -> Source Trees:
Secondly, you should have also already used git to clone the [Quicksilver repo](https://github.com/quicksilver/Quicksilver) and built Quicksilver successfully. For help on this topic see [Building Quicksilver](http://qsapp.com/wiki/Building_Quicksilver).
Finally, you must have built Quicksilver for development in order for the header files to be in the right places. Here’s how to build for development:
To check and make sure the headers are in the correct place, check this folder:
/tmp/QS/build/Debug/QSFoundation.framework/Headers/
It should exist and not be empty.
For more help visit Quicksilver’s Google Group or open a support request on the Github page.
