diff --git a/README.TXT b/README.TXT
index 2445294..9bb2a27 100644
--- a/README.TXT
+++ b/README.TXT
@@ -50,7 +50,7 @@
 
 	cp selphy_print_libusb /usr/lib/cups/backend/selphy
 	chown root:root /usr/lib/cups/backend/selphy
-	chmod 500 /usr/lib/cups/backend/selphy
+	chmod 700 /usr/lib/cups/backend/selphy
 
    You may need to restart CUPS, and you will also need a prerelease 
    version of gutenprint installed.
diff --git a/es_print_common.h b/es_print_common.h
index c36b5da..0f34b05 100644
--- a/es_print_common.h
+++ b/es_print_common.h
@@ -25,7 +25,7 @@
  *
  */
 
-#define VERSION "0.30"
+#define VERSION "0.32"
 
 #define DEBUG( ... ) fprintf(stderr, "DEBUG: " __VA_ARGS__ )
 #define ERROR( ... ) fprintf(stderr, "ERROR: " __VA_ARGS__ )
@@ -56,6 +56,7 @@ struct printer_data {
 	int16_t ready_m_readback[READBACK_LEN];
 	int16_t ready_c_readback[READBACK_LEN];
 	int16_t done_c_readback[READBACK_LEN];
+	int16_t error_readback[READBACK_LEN];
 	int16_t paper_codes[256];
 	int16_t pgcode_offset;  /* Offset into printjob for paper type */
 	int16_t paper_code_offset; /* Offset in readback for paper type */
@@ -82,6 +83,7 @@ struct printer_data printers[P_END] = {
 	  .ready_m_readback = { 0x04, 0x00, 0x03, 0x00, 0x02, 0x01, -1, 0x01, 0x00, 0x00, 0x00, 0x00 },
 	  .ready_c_readback = { 0x04, 0x00, 0x07, 0x00, 0x02, 0x01, -1, 0x01, 0x00, 0x00, 0x00, 0x00 },
 	  .done_c_readback = { 0x04, 0x00, 0x00, 0x00, 0x02, 0x01, -1, 0x01, 0x00, 0x00, 0x00, 0x00 },
+	  // .error_readback
 	  // .paper_codes
 	  .pgcode_offset = 3,
 	  .paper_code_offset = 6,
@@ -95,6 +97,7 @@ struct printer_data printers[P_END] = {
 	  .ready_m_readback = { 0x06, 0x00, 0x03, 0x00, -1, 0x00, -1, -1, 0x00, 0x00, 0x00, 0x00 },
 	  .ready_c_readback = { 0x09, 0x00, 0x07, 0x00, -1, 0x00, -1, -1, 0x00, 0x00, 0x00, 0x00 },
 	  .done_c_readback = { 0x09, 0x00, 0x00, 0x00, -1, 0x00, -1, -1, 0x00, 0x00, 0x00, 0x00 },
+	  .error_readback = { 0x14, 0x00, -1, 0x00, -1, 0x00, -1, 0x00, -1, 0x00, 0x00, 0x00 },
 	  // .paper_codes
 	  .pgcode_offset = 2,
 	  .paper_code_offset = 4,
@@ -108,6 +111,7 @@ struct printer_data printers[P_END] = {
 	  .ready_m_readback = { 0x03, 0xff, 0x02, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 },
 	  .ready_c_readback = { 0x05, 0xff, 0x03, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 },
 	  .done_c_readback = { 0x00, 0xff, 0x10, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 },
+	  // .error_readback
 	  // .paper_codes
 	  .pgcode_offset = -1,
 	  .paper_code_offset = -1,
@@ -121,6 +125,7 @@ struct printer_data printers[P_END] = {
 //	  .ready_m_readback = 
 //	  .ready_c_readback = 
 //	  .done_c_readback = 
+	  // .error_readback
 	  // .paper_codes
 	  .pgcode_offset = 2,
 //	  .paper_code_offset = -1,
@@ -134,6 +139,7 @@ struct printer_data printers[P_END] = {
 	  .ready_m_readback = { 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, -1, 0x00, 0x00, 0x00, 0x00, -1 },
 	  .ready_c_readback = { 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, -1, 0x00, 0x00, 0x00, 0x00, -1 },
 	  .done_c_readback = { 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, -1, 0x00, 0x00, 0x00, 0x00, -1 },
+	  .error_readback = { 0x02, 0x00, 0x08, 0x00, 0x70, 0x00, -1, 0x00, 0x00, 0x00, 0x00, -1 },
 	  // .paper_codes
 	  .pgcode_offset = 3,
 	  .paper_code_offset = 6,
@@ -147,6 +153,8 @@ struct printer_data printers[P_END] = {
 	  .ready_m_readback = { 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, -1, 0x00, 0x00, 0x00, 0x00, -1 },
 	  .ready_c_readback = { 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, -1, 0x00, 0x00, 0x00, 0x00, -1 },
 	  .done_c_readback = { 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, -1, 0x00, 0x00, 0x00, 0x00, -1 },
+	  .error_readback = { 0x02, 0x00, 0x08, 0x00, 0x70, 0x00, -1, 0x00, 0x00, 0x00, 0x00, -1 },
+	  // .error_readback
 	  // .paper_codes
 	  .pgcode_offset = 3,
 	  .paper_code_offset = 6,
diff --git a/es_print_libusb.c b/es_print_libusb.c
index 531a678..7a39db1 100644
--- a/es_print_libusb.c
+++ b/es_print_libusb.c
@@ -428,6 +428,12 @@ top:
 	}
 	fflush(stderr);       
 
+	if (!memcmp(rdbuf, printers[printer_type].error_readback, READBACK_LEN)) {
+		DEBUG("error condition; aborting.  (Out of ribbon/paper?)\n");
+		ret = 4;
+		goto done_claimed;
+	}
+
 	switch(state) {
 	case S_IDLE:
 		if (!fancy_memcmp(rdbuf, printers[printer_type].init_readback, READBACK_LEN, paper_code_offset, paper_code)) {
diff --git a/es_print_linux.c b/es_print_linux.c
index 8677875..1e33094 100644
--- a/es_print_linux.c
+++ b/es_print_linux.c
@@ -172,6 +172,11 @@ top:
 	}
 	fflush(stderr);
 
+	if (!memcmp(rdbuf, printers[printer_type].error_readback, READBACK_LEN)) {
+		DEBUG("error condition; aborting.  (Out of ribbon/paper?)\n");
+		return 4;
+	}
+
 	switch(state) {
 	case S_IDLE:
 		if (!fancy_memcmp(rdbuf, printers[printer_type].init_readback, READBACK_LEN, paper_code_offset, paper_code)) {