Index: src/libchcore/ErrorCodes.h
===================================================================
diff -u -N -re96806b7f8ff7ca7e9f4afbea603e6351a3dc3e3 -r27a43e40952cf2f3e0bb0e608a8f3142042ceb46
--- src/libchcore/ErrorCodes.h	(.../ErrorCodes.h)	(revision e96806b7f8ff7ca7e9f4afbea603e6351a3dc3e3)
+++ src/libchcore/ErrorCodes.h	(.../ErrorCodes.h)	(revision 27a43e40952cf2f3e0bb0e608a8f3142042ceb46)
@@ -79,6 +79,10 @@
 		eErr_CannotReadFile = 3003,
 		eErr_CannotWriteFile = 3004,
 		eErr_InvalidOverlappedPosition = 3005,
+		eErr_CannotOpenFile = 3006,
+		eErr_FileNotOpen = 3007,
+		eErr_SeekFailed = 3008,
+		eErr_CannotTruncate = 3009,
 
 		// Task handling errors (4000+)
 		eErr_MissingTaskSerializationPath = 4000,