Index: trunk/src/board.c
===================================================================
--- trunk/src/board.c	(revision 25156)
+++ trunk/src/board.c	(revision 25157)
@@ -364,6 +364,8 @@
 
 void pcb_board_changed(int reverted)
 {
+	if ((pcb_gui != NULL) && (pcb_gui->set_hidlib != NULL))
+		pcb_gui->set_hidlib(&PCB->hidlib);
 	pcb_event(PCB_EVENT_BOARD_CHANGED, "i", reverted);
 }
 
Index: trunk/src/file_act.c
===================================================================
--- trunk/src/file_act.c	(revision 25156)
+++ trunk/src/file_act.c	(revision 25157)
@@ -146,6 +146,8 @@
 		 */
 		if (PCB->Changed && conf_core.editor.save_in_tmp)
 			pcb_save_in_tmp();
+		if (pcb_gui->set_hidlib != NULL)
+			pcb_gui->set_hidlib(NULL);
 		pcb_board_remove(PCB);
 		PCB = pcb_board_new(1);
 		pcb_board_new_postproc(PCB, 1);
Index: trunk/src/hid.h
===================================================================
--- trunk/src/hid.h	(revision 25156)
+++ trunk/src/hid.h	(revision 25157)
@@ -551,6 +551,10 @@
 	/* Open a popup menu addressed by full menu path (starting with "/popups/").
 	   Return 0 on success. */
 	int (*open_popup)(const char *menupath);
+
+	/* optional: called by core when the global hidlib context changes
+	   (e.g. board changed) */
+	void (*set_hidlib)(pcb_hidlib_t *hidlib);
 };
 
 /* One of these functions (in the common code) will be called whenever the GUI
Index: trunk/src/main.c
===================================================================
--- trunk/src/main.c	(revision 25156)
+++ trunk/src/main.c	(revision 25157)
@@ -672,6 +672,8 @@
 	if (we_are_exporting) {
 		if (pcb_data_is_empty(PCB->Data))
 			pcb_message(PCB_MSG_WARNING, "Exporting empty board (nothing loaded or drawn).\n");
+		if (pcb_gui->set_hidlib != NULL)
+			pcb_gui->set_hidlib(&PCB->hidlib);
 		pcb_gui->do_export(0);
 		log_print_uninit_errs("Exporting");
 		pcb_main_uninit();
@@ -689,6 +691,8 @@
 			pcb_message(PCB_MSG_ERROR, "%s\n", EXPERIMENTAL);
 			pcb_message(PCB_MSG_ERROR, "******************************** IMPORTANT ********************************\n");
 		}
+		if (pcb_gui->set_hidlib != NULL)
+			pcb_gui->set_hidlib(&PCB->hidlib);
 		pcb_gui->do_export(0);
 		pcb_gui = pcb_next_gui;
 		pcb_next_gui = NULL;