Workround added for bug in Pronterface (it sends 2 M24 commands on second file print). M24 is now ignored if a file

is actively printing.

Configuration.h

@@ -24,8 +24,8 @@ Licence: GPL
 #define CONFIGURATION_H
 
 #define NAME "RepRapFirmware"
-#define VERSION "0.48"
-#define DATE "2013-12-27"
+#define VERSION "0.49"
+#define DATE "2013-12-30"
 #define LAST_AUTHOR "reprappro.com"
 
 // Other firmware that we might switch to be compatible with.

GCodes.cpp

@@ -1337,6 +1337,8 @@ bool GCodes::ActOnGcode(GCodeBuffer *gb)
       break;
       
     case 24: // Print/resume-printing the selected file
+      if(fileBeingPrinted != NULL)
+    	  break;
       fileBeingPrinted = fileToPrint;
       fileToPrint = NULL;
       break;