diff --git a/README.TXT b/README.TXT
index a610732..2dd1efb 100644
--- a/README.TXT
+++ b/README.TXT
@@ -50,7 +50,7 @@
    or newer installed.  (This backend is bundled with gutenprint starting with
    v5.2.10)
 
-   Without the restof gutenprint installed, this is useless as a CUPS backend.
+   Without the rest of gutenprint installed, this is useless as a CUPS backend.
 
  ***************************************************************************
  Standalone usage:
diff --git a/selphy_print.c b/selphy_print.c
index aa330cb..635cc4a 100644
--- a/selphy_print.c
+++ b/selphy_print.c
@@ -50,7 +50,7 @@
 #define USB_PID_CANON_ES30  0x31B0
 #define USB_PID_CANON_ES40  0x31EE
 #define USB_PID_CANON_CP10  0x304A
-#define USB_PID_CANON_CP100 0x3063 // - incoming G
+#define USB_PID_CANON_CP100 0x3063
 #define USB_PID_CANON_CP200 0x307C
 #define USB_PID_CANON_CP220 0x30BD
 #define USB_PID_CANON_CP300 0x307D
@@ -438,9 +438,10 @@ top:
 	}
 	fflush(stderr);       
 
+	/* Error detection */
 	if (printers[printer_type].error_offset != -1 &&
 	    rdbuf[printers[printer_type].error_offset]) {
-		ERROR("error condition; aborting.  (Out of ribbon/paper?)\n");
+		ERROR("error condition %02x; aborting.  (Out of ribbon/paper?)\n", rdbuf[printers[printer_type].error_offset]);
 		ret = 4;
 		goto done_claimed;
 	}
diff --git a/selphy_print_linux.c b/selphy_print_linux.c
index 5b48d20..fec1c30 100644
--- a/selphy_print_linux.c
+++ b/selphy_print_linux.c
@@ -172,9 +172,10 @@ top:
 	}
 	fflush(stderr);
 
+	/* Error detection */
 	if (printers[printer_type].error_offset != -1 &&
 	    rdbuf[printers[printer_type].error_offset]) {
-		ERROR("error condition; aborting.  (Out of ribbon/paper?)\n");
+		ERROR("error condition %02x; aborting.  (Out of ribbon/paper?)\n", rdbuf[printers[printer_type].error_offset]);
 		return 4;
 	}