diff --git a/leenkx/blender/lnx/make.py b/leenkx/blender/lnx/make.py
index 5bd332a..fea052f 100644
--- a/leenkx/blender/lnx/make.py
+++ b/leenkx/blender/lnx/make.py
@@ -75,6 +75,11 @@ def run_proc(cmd, done: Callable) -> subprocess.Popen:
             # Put the done callback into the callback queue so that it
             # can be received by a polling function in the main thread
             thread_callback_queue.put([threading.current_thread(), done], block=True)
+            while not thread_callback_queue.empty():
+                print("Processing callback from thread:", threading.current_thread())
+                thread, callback = thread_callback_queue.get()
+                if callback is not None:
+                    callback()
         else:
             done()