diff --git a/po/laview-core.pot b/po/laview-core.pot
index ef8f53f..3d72eb1 100644
--- a/po/laview-core.pot
+++ b/po/laview-core.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: laview-core\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2016-06-23 22:28+0300\n"
+"POT-Creation-Date: 2018-02-21 13:10+0300\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -34,7 +34,7 @@ msgid "Microsoft doesn't follow any file hierarchy standarts."
 msgstr ""
 
 #: config/ws.backbone.laview.core.gschema.xml.h:5
-msgid "Path to latexmk.pl script (win32 only)."
+msgid "Path to latexmk script (win32 only)."
 msgstr ""
 
 #: config/ws.backbone.laview.core.gschema.xml.h:6
@@ -69,46 +69,50 @@ msgstr ""
 msgid "State of an imaginary light switch."
 msgstr ""
 
-#: src/conv/main.vala:37 src/conv/main.vala:52 src/conv/main.vala:71
-#: src/conv/main.vala:86 src/core/Core.vala:220
+#: src/conv/main.vala:37 src/conv/main.vala:53 src/conv/main.vala:72
+#: src/conv/main.vala:88 src/core/Core.vala:227
 msgid " not found"
 msgstr ""
 
-#: src/conv/main.vala:37 src/conv/main.vala:52 src/conv/main.vala:71
-#: src/conv/main.vala:86
+#: src/conv/main.vala:37 src/conv/main.vala:53 src/conv/main.vala:72
+#: src/conv/main.vala:88
 msgid "File "
 msgstr ""
 
-#: src/conv/main.vala:39 src/conv/main.vala:54 src/conv/main.vala:73
-#: src/conv/main.vala:88
-msgid " does not exists"
+#: src/conv/main.vala:39 src/conv/main.vala:55 src/conv/main.vala:74
+#: src/conv/main.vala:90
+msgid " does not exist"
 msgstr ""
 
-#: src/conv/main.vala:39 src/conv/main.vala:54 src/conv/main.vala:73
-#: src/conv/main.vala:88
+#: src/conv/main.vala:39 src/conv/main.vala:55 src/conv/main.vala:74
+#: src/conv/main.vala:90
 msgid "Target directory for "
 msgstr ""
 
-#: src/conv/main.vala:56
+#: src/conv/main.vala:57
 msgid "Cann't find tex2lyx command"
 msgstr ""
 
-#: src/core/Core.vala:161
+#: src/core/Core.vala:168
 msgid "Error running lyx2tex subprocess for "
 msgstr ""
 
-#: src/core/Core.vala:204 src/core/Core.vala:213 src/core/Core.vala:533
+#: src/core/Core.vala:211 src/core/Core.vala:220 src/core/Core.vala:766
 msgid "Prepare document first."
 msgstr ""
 
-#: src/core/Core.vala:220
+#: src/core/Core.vala:227
 msgid "PDF file "
 msgstr ""
 
-#: src/core/Core.vala:544
+#: src/core/Core.vala:708 src/core/Core.vala:717
+msgid "IdxError"
+msgstr ""
+
+#: src/core/Core.vala:777
 msgid "Error running tex2lyx subprocess."
 msgstr ""
 
-#: src/core/Core.vala:546
+#: src/core/Core.vala:779
 msgid "Cann't create lyx document for editing."
 msgstr ""
diff --git a/po/ru/laview-core.po b/po/ru/laview-core.po
index 39f7a9e..637c503 100644
--- a/po/ru/laview-core.po
+++ b/po/ru/laview-core.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: laview-core\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2016-06-23 22:28+0300\n"
+"POT-Creation-Date: 2018-02-21 13:10+0300\n"
 "PO-Revision-Date: 2015-08-30 12:46+0300\n"
 "Last-Translator:  <backbone@backbone.ws>\n"
 "Language-Team: Russian\n"
@@ -35,7 +35,7 @@ msgid "Microsoft doesn't follow any file hierarchy standarts."
 msgstr "Микрософт не следует каким-либо стандартам файловой иерархии."
 
 #: config/ws.backbone.laview.core.gschema.xml.h:5
-msgid "Path to latexmk.pl script (win32 only)."
+msgid "Path to latexmk script (win32 only)."
 msgstr "Путь к скрипту latexmk.pl (только win32)."
 
 #: config/ws.backbone.laview.core.gschema.xml.h:6
@@ -70,46 +70,50 @@ msgstr ""
 msgid "State of an imaginary light switch."
 msgstr ""
 
-#: src/conv/main.vala:37 src/conv/main.vala:52 src/conv/main.vala:71
-#: src/conv/main.vala:86 src/core/Core.vala:220
+#: src/conv/main.vala:37 src/conv/main.vala:53 src/conv/main.vala:72
+#: src/conv/main.vala:88 src/core/Core.vala:227
 msgid " not found"
 msgstr " не найден"
 
-#: src/conv/main.vala:37 src/conv/main.vala:52 src/conv/main.vala:71
-#: src/conv/main.vala:86
+#: src/conv/main.vala:37 src/conv/main.vala:53 src/conv/main.vala:72
+#: src/conv/main.vala:88
 msgid "File "
 msgstr "Файл "
 
-#: src/conv/main.vala:39 src/conv/main.vala:54 src/conv/main.vala:73
-#: src/conv/main.vala:88
-msgid " does not exists"
+#: src/conv/main.vala:39 src/conv/main.vala:55 src/conv/main.vala:74
+#: src/conv/main.vala:90
+msgid " does not exist"
 msgstr " отсутствует"
 
-#: src/conv/main.vala:39 src/conv/main.vala:54 src/conv/main.vala:73
-#: src/conv/main.vala:88
+#: src/conv/main.vala:39 src/conv/main.vala:55 src/conv/main.vala:74
+#: src/conv/main.vala:90
 msgid "Target directory for "
 msgstr "Целевая директория для "
 
-#: src/conv/main.vala:56
+#: src/conv/main.vala:57
 msgid "Cann't find tex2lyx command"
 msgstr "Не удаётся найти команду tex2lyx"
 
-#: src/core/Core.vala:161
+#: src/core/Core.vala:168
 msgid "Error running lyx2tex subprocess for "
 msgstr "Ошибка запуска подпроцесса lyx2tex для "
 
-#: src/core/Core.vala:204 src/core/Core.vala:213 src/core/Core.vala:533
+#: src/core/Core.vala:211 src/core/Core.vala:220 src/core/Core.vala:766
 msgid "Prepare document first."
 msgstr "Сначала подготовьте документ."
 
-#: src/core/Core.vala:220
+#: src/core/Core.vala:227
 msgid "PDF file "
 msgstr "PDF файл "
 
-#: src/core/Core.vala:544
+#: src/core/Core.vala:708 src/core/Core.vala:717
+msgid "IdxError"
+msgstr ""
+
+#: src/core/Core.vala:777
 msgid "Error running tex2lyx subprocess."
 msgstr "Ошибка запуска подпроцесса tex2lyx."
 
-#: src/core/Core.vala:546
+#: src/core/Core.vala:779
 msgid "Cann't create lyx document for editing."
 msgstr "Невозможно создать lyx документ для редактирования."
diff --git a/src/conv/main.vala b/src/conv/main.vala
index 6af19a4..9d8b9f8 100644
--- a/src/conv/main.vala
+++ b/src/conv/main.vala
@@ -36,7 +36,7 @@ namespace LAview {
 				if (!File.new_for_path(lyx_file).query_exists())
 					throw new IOError.NOT_FOUND(_("File ")+lyx_file+_(" not found"));
 				if (!File.new_for_path(tex_path).get_parent().query_exists())
-					throw new IOError.NOT_FOUND(_("Target directory for ")+tex_path+_(" does not exists"));
+					throw new IOError.NOT_FOUND(_("Target directory for ")+tex_path+_(" does not exist"));
 				return (new SubprocessLauncher(  SubprocessFlags.STDIN_PIPE
 				                               | SubprocessFlags.STDOUT_PIPE
 				                               | SubprocessFlags.STDERR_PIPE))
@@ -52,7 +52,7 @@ namespace LAview {
 				if (!File.new_for_path(tex_file).query_exists())
 					throw new IOError.NOT_FOUND(_("File ")+tex_file+_(" not found"));
 				if (!File.new_for_path(lyx_file_path).get_parent().query_exists())
-					throw new IOError.NOT_FOUND(_("Target directory for ")+lyx_file_path+_(" does not exists"));
+					throw new IOError.NOT_FOUND(_("Target directory for ")+lyx_file_path+_(" does not exist"));
 				var last_index_of = lyx_path.last_index_of ("lyx");
 				if (last_index_of == -1) throw new IOError.NOT_FOUND(_("Cann't find tex2lyx command"));
 				var tex2lyx_path = lyx_path.substring(0, last_index_of)
@@ -71,7 +71,7 @@ namespace LAview {
 				if (!File.new_for_path(lyx_file).query_exists())
 					throw new IOError.NOT_FOUND(_("File ")+lyx_file+_(" not found"));
 				if (!File.new_for_path(pdf_path).get_parent().query_exists())
-					throw new IOError.NOT_FOUND(_("Target directory for ")+pdf_path+_(" does not exists"));
+					throw new IOError.NOT_FOUND(_("Target directory for ")+pdf_path+_(" does not exist"));
 				return (new SubprocessLauncher(  SubprocessFlags.STDIN_PIPE
 				                               | SubprocessFlags.STDOUT_PIPE
 				                               | SubprocessFlags.STDERR_PIPE))
@@ -87,7 +87,7 @@ namespace LAview {
 				if (!File.new_for_path(tex_file).query_exists())
 					throw new IOError.NOT_FOUND(_("File ")+tex_file+_(" not found"));
 				if (!File.new_for_path(pdf_path).get_parent().query_exists())
-					throw new IOError.NOT_FOUND(_("Target directory for ")+pdf_path+_(" does not exists"));
+					throw new IOError.NOT_FOUND(_("Target directory for ")+pdf_path+_(" does not exist"));
 
 				var pdf_dir = File.new_for_path(pdf_path).get_parent().get_path();
 				var pdf_name = File.new_for_path(pdf_path).get_basename();