diff --git a/Contents.m b/Contents.m
index f3bee13d8af0365d4953ff2b452de668eb4738df..107cc9bb6ae2ecbb68dbc5f7de651f751563c21f 100644
--- a/Contents.m
+++ b/Contents.m
@@ -1,5 +1,5 @@
 % CRP Toolbox
-% Version 5.25 (R35) 09-Jun-2023
+% Version 5.22 (R35) 05-Jul-2023
 %
 %    ace            -    Finds optimal transformation and maximal correlation.
 %    adjust         -    Adjusts two two-column vectors.
@@ -69,4 +69,4 @@
 % along with this program; if not, write to the Free Software
 % Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
-% Modified at 09-Jun-2023 17:58:38 by MAKEINSTALL
+% Modified at 05-Jul-2023 18:05:37 by MAKEINSTALL
diff --git a/crpclean.m b/crpclean.m
index c6410529597648ab9fbaea6307c54dfc42f4ee91..b85f118490e5491c1123ca38849cac8dfcfbe0db 100644
--- a/crpclean.m
+++ b/crpclean.m
@@ -16,7 +16,7 @@ function crpclean
 % Norbert Marwan, Potsdam University, Germany
 % http://www.agnld.uni-potsdam.de
 %
-% Generation date: 09-Jun-2023 17:58:38
+% Generation date: 05-Jul-2023 18:05:37
 % $Date$
 % $Revision$
 
diff --git a/makeinstall.rc b/makeinstall.rc
index b2c20d73363eba68fe5dd8bd3ce53fc088df4a1f..4f182fc4dcbab449c06a6c9648f0ed8ba7f2f820 100644
--- a/makeinstall.rc
+++ b/makeinstall.rc
@@ -5,7 +5,7 @@ toolbox_name='CRP Toolbox';                   % name of the toolbox
 install_file='install.m';                     % name of the install script
 deinstall_file='crpclean.m';                  % name of the deinstall script
 old_dirs={'crpdemo','crp-tb','crp-tool','crp','crpplugin'};                   % possible old (obsolete) toolbox folders
-ignore={'changelog.md','changelog.zsh','makerelease.zsh'};      % files and folders to be ignored
+ignore={'.gpl.crp','changelog.md','changelog.zsh','makerelease.zsh'};      % files and folders to be ignored
 install_dirPC='crptool';                      % the folder where the toolbox files will be extracted (PC)
 install_dirUNIX='CRPtool';                    % the folder where the toolbox files will be extracted (UNIX)
 src_dir='~/matlab/CRPtool';                   % folder with the origin toolbox
diff --git a/private/logo_pik.mat b/private/logo_pik.mat
new file mode 100644
index 0000000000000000000000000000000000000000..a27eb06de6203e1d55900bd82e1c1c283982644a
Binary files /dev/null and b/private/logo_pik.mat differ
diff --git a/private/logo_uni.mat b/private/logo_uni.mat
new file mode 100644
index 0000000000000000000000000000000000000000..514b7949a27bd92dd2ec7d73a152203961c8156e
Binary files /dev/null and b/private/logo_uni.mat differ