diff --git a/project.py b/project.py
index 6731f85..b26e2a6 100644
--- a/project.py
+++ b/project.py
@@ -1575,6 +1575,8 @@
         self._InitHooks()
 
     def _CopyAndLinkFiles(self):
+        if not self.worktree or not platform_utils.isdir(self.worktree):
+            return
         for copyfile in self.copyfiles:
             copyfile._Copy()
         for linkfile in self.linkfiles: