diff -crN old/dvd+rw-format.cpp new/dvd+rw-format.cpp
*** old/dvd+rw-format.cpp	2004-04-20 07:32:14.000000000 +0900
--- new/dvd+rw-format.cpp	2005-03-06 12:12:59.000000000 +0900
***************
*** 485,492 ****
  	    cmd[1] = 1;		// "Perform OPC"
  	    cmd[9] = 0;
  	    cmd.timeout(120);	// NEC units can be slooo...w
! 	    if ((err=cmd.transport()))
! 		sperror ("PERFORM OPC",err), exit (1);
  	}
  
  	if (blank)		// DVD-RW blanking procedure
--- 485,495 ----
  	    cmd[1] = 1;		// "Perform OPC"
  	    cmd[9] = 0;
  	    cmd.timeout(120);	// NEC units can be slooo...w
! 	    if ((err=cmd.transport())){
! 			if (err != 0x52700){	// Plextor PX-716A?
! 				sperror ("PERFORM OPC",err), exit (1);
! 			}
! 		}
  	}
  
  	if (blank)		// DVD-RW blanking procedure
diff -crN old/growisofs_mmc.cpp new/growisofs_mmc.cpp
*** old/growisofs_mmc.cpp	2004-07-16 21:48:57.000000000 +0900
--- new/growisofs_mmc.cpp	2005-03-06 12:07:20.000000000 +0900
***************
*** 1206,1211 ****
--- 1206,1213 ----
  		break;		// LD-F321 doesn't support SEND OPC?
  	    if (err==0x52700)	// "WRITE PROTECTED"
  		break;		// Plextor PX-712A?
+ 	    if (err==0x52C00)	//
+ 		break;		// Plextor PX-716A?
  	    if (err==0x17301)	// "POWER CALIBRATION AREA ALMOST FULL"
  	    {	fprintf (stderr,":-! WARNING: Power Calibration Area "
  	    			    "is almost full\n");