Hello, i tried compile some extensions in a "cpp" C++ file. and the move of the thread structure into "node.h" is problematic at the moment. Please insert an #include "st.h" at the top of the file otherwise the "st_table* locals" will throw an error if the extension has not included "st.h" before "node.h". Thats a simple fix. -- Best regards, emailto: scholz at scriptolutions dot com Lothar Scholz http://www.ruby-ide.com CTO Scriptolutions Ruby, PHP, Python IDE 's