diff --git a/ANNOUNCE b/ANNOUNCE
index 1831b658c4..5647b29b8a 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -1,11 +1,16 @@
-Public release of LyX version 1.4.5
-===================================
+Public release of LyX version 1.4.5.1
+=====================================
 
-We are pleased to announce the release of LyX 1.4.5. This is expected
+We are pleased to announce the release of LyX 1.4.5.1. This is expected
 to be the last release in the 1.4.x stable branch. Besides the
 obligatory bug fixes, its main feature is the ability to read files
 created by LyX 1.5.0 (this feature requires python 2.3.4 or later).
 
+The only change over release 1.4.5 is the addition to the distribution
+of one file necessary to read and write lyx 1.5 files. Otherwise this
+is the same announce of version 1.4.5 with the references to release
+updated.
+
 See the file RELEASE-NOTES for some known problems in this release.
 
 In case you are wondering what LyX is, here is what
@@ -32,37 +37,37 @@ http://www.lyx.org/ has to say on the subject:
    internationalized application running natively on Unix/Linux, the
    Macintosh and modern Windows platforms.
 
-You can download LyX 1.4.5 here (the .bz2 are compressed with bzip2,
+You can download LyX 1.4.5.1 here (the .bz2 are compressed with bzip2,
 which yields smaller files):
 
-	ftp://ftp.lyx.org/pub/lyx/stable/lyx-1.4.5.tar.gz
-	ftp://ftp.lyx.org/pub/lyx/stable/lyx-1.4.5.tar.bz2
-	ftp://ftp.devel.lyx.org/pub/lyx/lyx-1.4.5.tar.gz
-	ftp://ftp.devel.lyx.org/pub/lyx/lyx-1.4.5.tar.bz2
+	ftp://ftp.lyx.org/pub/lyx/stable/lyx-1.4.5.1.tar.gz
+	ftp://ftp.lyx.org/pub/lyx/stable/lyx-1.4.5.1.tar.bz2
+	ftp://ftp.devel.lyx.org/pub/lyx/lyx-1.4.5.1.tar.gz
+	ftp://ftp.devel.lyx.org/pub/lyx/lyx-1.4.5.1.tar.bz2
 
 and it should propagate shortly to the following mirrors (which will
 also host the .bz2 versions):
 
-        ftp://ftp.lip6.fr/pub/lyx/stable/lyx-1.4.5.tar.gz
-	http://lyx.cybermirror.org/stable/lyx-1.4.5.tar.gz
-        ftp://gd.tuwien.ac.at/publishing/tex/lyx/stable/lyx-1.4.5.tar.gz
-        ftp://ftp.ntua.gr/pub/X11/LyX/stable/lyx-1.4.5.tar.gz
-	http://sunsite.icm.edu.pl/pub/unix/editors/lyx/stable/lyx-1.4.5.tar.gz
-        http://lyx.mirror.fr/stable/lyx-1.4.5.tar.gz
+        ftp://ftp.lip6.fr/pub/lyx/stable/lyx-1.4.5.1.tar.gz
+	http://lyx.cybermirror.org/stable/lyx-1.4.5.1.tar.gz
+        ftp://gd.tuwien.ac.at/publishing/tex/lyx/stable/lyx-1.4.5.1.tar.gz
+        ftp://ftp.ntua.gr/pub/X11/LyX/stable/lyx-1.4.5.1.tar.gz
+	http://sunsite.icm.edu.pl/pub/unix/editors/lyx/stable/lyx-1.4.5.1.tar.gz
+        http://lyx.mirror.fr/stable/lyx-1.4.5.1.tar.gz
 
 Prebuilt binaries (rpms for linux distributions, Mac OS X and Windows
 installers) should soon be available at
-	ftp://ftp.lyx.org/pub/lyx/bin/1.4.5/
+	ftp://ftp.lyx.org/pub/lyx/bin/1.4.5.1/
 
 If you already have the LyX 1.4.4 sources, you may want to apply one
 of the following patches instead
-	ftp://ftp.lyx.org/pub/lyx/stable/patch-1.4.5.gz
-	ftp://ftp.lyx.org/pub/lyx/stable/patch-1.4.5.bz2
+	ftp://ftp.lyx.org/pub/lyx/stable/patch-1.4.5.1.gz
+	ftp://ftp.lyx.org/pub/lyx/stable/patch-1.4.5.1.bz2
 
 Note that this patch will not produce valid LyX/Mac sources, since
 some binary files have been added for this release.
 
-If you find what you think is a bug in LyX 1.4.5, you may either
+If you find what you think is a bug in LyX 1.4.5.1, you may either
 e-mail the LyX developers' mailing list (lyx-devel <at> lists.lyx.org),
 or open a bug report at http://bugzilla.lyx.org
 
@@ -74,8 +79,8 @@ Enjoy!
 
 The LyX team.
 
-What's new in version 1.4.5?
----------------------------- 
+What's new in version 1.4.5.1?
+------------------------------
 
 What's new
 ==========
diff --git a/NEWS b/NEWS
index 931c446f30..881a29af74 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,10 @@
-What's new in version 1.4.5?
----------------------------- 
+What's new in version 1.4.5.1?
+------------------------------
+
+The only change over release 1.4.5 is the addition to the distribution
+of one file necessary to read and write lyx 1.5 files. Otherwise this
+is the same announce of version 1.4.5 with the references to release
+updated.
 
 ** Updates:
 ***********
diff --git a/lib/Makefile.am b/lib/Makefile.am
index cc599f9061..aa9b60dae3 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -5,7 +5,8 @@ SUBDIRS = doc lyx2lyx
 CHMOD = chmod
 
 dist_pkgdata_DATA = lyxrc.example CREDITS chkconfig.ltx \
-	       external_templates encodings languages symbols syntax.default
+	       external_templates encodings languages symbols syntax.default \
+	       unicodesymbols
 
 # Note that we "chmod 755" manually this file in install-data-hook.
 dist_pkgdata_PYTHON = configure.py