#1260 changing addnature sequence seems to fix this

Author: jantje

io.sloeber.core/src/io/sloeber/core/api/BoardDescriptor.java

@@ -602,10 +602,10 @@ public void run(IProgressMonitor internalMonitor) throws CoreException {
                             ManagedBuilderCorePlugin.MANAGED_MAKE_PROJECT_ID);
 
                     // add the required natures
-                    ManagedCProjectNature.addNature(newProjectHandle, "org.eclipse.cdt.core.ccnature", internalMonitor); //$NON-NLS-1$
-                    ManagedCProjectNature.addNature(newProjectHandle, Const.ARDUINO_NATURE_ID, internalMonitor);
                     ManagedCProjectNature.addManagedNature(newProjectHandle, internalMonitor);
                     ManagedCProjectNature.addManagedBuilder(newProjectHandle, internalMonitor);
+                    ManagedCProjectNature.addNature(newProjectHandle, "org.eclipse.cdt.core.ccnature", internalMonitor); //$NON-NLS-1$
+                    ManagedCProjectNature.addNature(newProjectHandle, Const.ARDUINO_NATURE_ID, internalMonitor);