diff --git a/src/server/simpleslave.c b/src/server/simpleslave.c
--- a/src/server/simpleslave.c
+++ b/src/server/simpleslave.c
@@ -155,6 +155,8 @@ if(updateConf){
   // Variables needed for main loop
   int jobnum = 0;
   int framenum = 0;
+  int xres = 0;
+  int yres = 0;
   int slavekey = atoi(username); // @TODO: Make this more friendly
 
   char *urltoTar;      /* Full URL to the server-side location of job#.tgz */
@@ -210,7 +212,7 @@ if(updateConf){
     // request work
     if(DEBUG)
       fprintf(stderr,"Requesting work from %s...\n", hostname);
-    haveWork = _web_getwork(slavekey, password, &jobnum, &framenum);
+    haveWork = _web_getwork(slavekey, password, &jobnum, &framenum, &xres, &yres, outputExt);
 
     /* If we got a frame */
     if(haveWork)
@@ -277,8 +279,7 @@ if(updateConf){
           fprintf(stderr,"Executing blender on file %s\n", pathtoJobfile);
           fprintf(stderr,"Directing output to file %s\n", pathtoOutput);
         }
-
-        if(exec_blender(pathtoJobfile, pathtoRenderOutput, framenum))
+        if(exec_blender(pathtoJobfile, pathtoRenderOutput, outputExt, xres, yres, framenum))
           {
             fprintf(stderr,"Error running Blender. Check your installation and/or your PATH.\n");
             _web_resetframe(slavekey, password, jobnum, framenum);  // Unassign the frame on the server so other slaves can render it