diff --git a/libisoburn/trunk/frontend/xorriso-tcltk b/libisoburn/trunk/frontend/xorriso-tcltk
index 9acc7671..c134cf92 100755
--- a/libisoburn/trunk/frontend/xorriso-tcltk
+++ b/libisoburn/trunk/frontend/xorriso-tcltk
@@ -28,11 +28,11 @@ proc print_usage {argv0} {
   puts stderr " --help"
   puts stderr "     Print this text and exit."
   puts stderr " --stdio"
-  puts stderr "     Establishes connection to xorriso via stdin and stdout."
+  puts stderr "     Establish connection to xorriso via stdin and stdout."
   puts stderr "     E.g. when letting xorriso start this frontend program:"
   puts stderr "       xorriso -launch_frontend \$(which xorriso-tcltk) --stdio --"
   puts stderr " --named_pipes cmd_fifo reply_fifo"
-  puts stderr "     Establishes connection to a xorriso process started by:"
+  puts stderr "     Establish connection to a xorriso process started by:"
   puts stderr "       xorriso -dialog on <cmd_fifo >reply_fifo"
   puts stderr "     which is then ready for a run of:"
   puts stderr "       xorriso-tcltk --named_pipes cmd_fifo reply_fifo"
@@ -129,10 +129,14 @@ set expect_broken_pipes "0"
 
 # Local copies of xorriso state
 
-# Addresses of drives (or image files)
+# Addresses of drives (or image files) as shown by their text fields in the GUI
 set outdev_adr ""
 set indev_adr ""
 
+# Addresses of drives (or image files) as set in xorriso (after inquire_dev)
+set eff_outdev_adr ""
+set eff_indev_adr ""
+
 # Whether the medium is blank, appendable, closed, missing
 set indev_medium_status "missing"
 set outdev_medium_status "missing"
@@ -610,21 +614,21 @@ proc inquire_severity_list {} {
 # Parse-by-xorriso handler function for proc inquire_dev
 #
 proc set_inquired_dev {} {
-  global result_list indev_adr outdev_adr
+  global result_list eff_indev_adr eff_outdev_adr
 
   if {[llength "$result_list"] < 2} {return ""} 
   set what [lindex "$result_list" 0]
   if {"$what" == "-dev" || "$what" == "-indev"} {
-    set indev_adr [lindex "$result_list" 1]
+    set eff_indev_adr [lindex "$result_list" 1]
   }
   if {"$what" == "-dev" || "$what" == "-outdev"} {
-    set outdev_adr [lindex "$result_list" 1]
+    set eff_outdev_adr [lindex "$result_list" 1]
   }
 }
 
 
-# Inquire -indev and -outdev from xorriso and install in indev_adr
-# and outdev_adr. Usually called when the user messed up the text fields.
+# Inquire -indev and -outdev from xorriso and install in eff_indev_adr
+# and eff_outdev_adr.
 # (This could be done by -toc_of like in proc refresh_indev. But here
 #  i demonstrate the use of command -status and parsing its result by
 #  help of xorriso.)
@@ -639,6 +643,18 @@ proc inquire_dev {} {
 }
 
 
+# Inquire -indev and -outdev from xorriso and install in indev_adr
+# and outdev_adr.
+#
+proc update_dev_var {} {
+  global result_list eff_indev_adr eff_outdev_adr indev_adr outdev_adr
+
+  inquire_dev
+  set indev_adr "$eff_indev_adr"
+  set outdev_adr "$eff_outdev_adr"
+}
+
+
 # Parse-by-xorriso handler function for proc isofs_ls
 #
 proc isofs_ls_handler {} {
@@ -1061,7 +1077,7 @@ proc indev_return {} {
   global .outdev_entry
 
   if {[assert_no_changes] == 0} {
-    inquire_dev
+    update_dev_var
     return "0"
   }
   reset_highest_cmd_sev
@@ -1126,7 +1142,7 @@ proc dev_return {} {
     outdev_return
   } else {
     if {[assert_no_changes] == 0} {
-      inquire_dev
+      update_dev_var
       return "0"
     }
     reset_highest_cmd_sev
@@ -1351,7 +1367,7 @@ proc give_up_dev {} {
 proc isodir_return {caller} {
   global isodir_adr result_list isolist_names isolist_types isodir_return_name
   global isodir_is_pwd highest_cmd_sev highest_cmd_sev_msg
-  global indev_adr outdev_adr
+  global indev_adr outdev_adr eff_indev_adr
   global .isolist
   global bulk_parse_mode
   global bulk_parse_max_chunk
@@ -1364,11 +1380,10 @@ proc isodir_return {caller} {
   set isolist_names ""
   set isolist_types ""
 
-  if {"$indev_adr" == "" && "$outdev_adr" == ""} {
-    if {[changes_are_pending] == "0"} {return ""}
-  }
-  normalize_isodir_adr
+  inquire_dev
+  if {"$eff_indev_adr" == "" && [changes_are_pending] == "0"} {return ""}
 
+  normalize_isodir_adr
   set file_type [isofs_filetype "$isodir_adr"]
   if {"$file_type" != "d" && "$file_type" != ""} {
     .isolist insert end "@@@ exists but is not a directory @@@"
@@ -1704,7 +1719,7 @@ proc burn_commit {} {
     if {[window_yesno "Really write ISO changes as session to $outdev_adr ?"] \
         != 1} { return "" }
   } else {
-    if {[window_yesno "Really write new ISO filesystem to $outdev_adr ?"] \
+    if {[window_yesno "Really write a new ISO filesystem to $outdev_adr ?"] \
         != 1} { return "" }
   }
 
@@ -1792,7 +1807,7 @@ proc burn_write_image {} {
   global burn_write_image_adr burn_write_close outdev_adr outdev_medium_status
   global outdev_profile burn_write_tao burn_write_defect_mgt indev_adr
 
-  inquire_dev
+  update_dev_var
   if {"$indev_adr" != ""} {
     xorriso_tcltk_errmsg \
        "xorriso-tcltk : SORRY : You may not have an input drive open when writing an image file"
diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index b690be5c..c82432fd 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2012.12.31.120152"
+#define Xorriso_timestamP "2012.12.31.173306"