(ins)marco@knecht:/opt/s25rttr/bin$ ls
RTTR  rttr.sh  s25client  s25edit
(ins)marco@knecht:/opt/s25rttr/bin$ ./rttr.sh
checking for an update ...
Using directory "/opt/s25rttr/bin/../"
Requesting current version information from server...
Parsing update list...
Savegame version of currently installed version: 4
Savegame version of updated version: 4
You will be able to load your existing savegames.
Updating folder structure...
creating symlink ./lib/libminiupnpc.so
Return To The Roots v20171203-16186a84c9e8a13a88c5ca9f36ed8f0ab3aca7de
Compiled with Gnu GCC C/C++ (4.6.3) for Linux 64 Bit

Starting in /opt/s25rttr
terminate called after throwing an instance of 'boost::filesystem::filesystem_error'
  what():  boost::filesystem::status: File name too long: "/opt/s25rttr/share/s25rttr/RTTR/languages/LC_CTYPE=en_US.UTF-8;LC_NUMERIC=de_DE.UTF-8;LC_TIME=de_DE.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=de_DE.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=de_DE.UTF-8;LC_NAME=de_DE.UTF-8;LC_ADDRESS=de_DE.UTF-8;LC_TELEPHONE=de_DE.UTF-8;LC_MEASUREMENT=de_DE.UTF-8;LC_IDENTIFICATION=de_DE.UTF-8/LC_MESSAGES/rttr.mo"
/opt/s25rttr/bin/../bin/rttr.sh: line 60:   583 Aborted                 (core dumped) $cmd $DIR/../bin/s25client $*
An error occured: press enter to continue

(ins)marco@knecht:/opt/s25rttr$ locale
LANG=en_US.UTF-8
LANGUAGE=en_US
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC=de_DE.UTF-8
LC_TIME=de_DE.UTF-8
LC_COLLATE="en_US.UTF-8"
LC_MONETARY=de_DE.UTF-8
LC_MESSAGES="en_US.UTF-8"
LC_PAPER=de_DE.UTF-8
LC_NAME=de_DE.UTF-8
LC_ADDRESS=de_DE.UTF-8
LC_TELEPHONE=de_DE.UTF-8
LC_MEASUREMENT=de_DE.UTF-8
LC_IDENTIFICATION=de_DE.UTF-8
LC_ALL=
(ins)marco@knecht:/opt/s25rttr$ echo $LANG
en_US.UTF-8
(ins)marco@knecht:/opt/s25rttr$ echo $LCALL

(ins)marco@knecht:/opt/s25rttr$ echo $LC_ALL

(ins)marco@knecht:/opt/s25rttr$

(ins)marco@knecht:~/Downloads/s25client/build/bin$ ./s25client
Return To The Roots v20171212-16186a84c9e8a13a88c5ca9f36ed8f0ab3aca7de
Compiled with Gnu GCC C/C++ (6.3.0) for Linux 64 Bit

Starting in /home/marco/Downloads/s25client/build
terminate called after throwing an instance of 'boost::filesystem::filesystem_error'
  what():  boost::filesystem::status: File name too long: "/home/marco/Downloads/s25client/RTTR/languages/LC_CTYPE=en_US.UTF-8;LC_NUMERIC=de_DE.UTF-8;LC_TIME=de_DE.UTF-8;LC_COLLATE=en_US.UTF-8;LC_MONETARY=de_DE.UTF-8;LC_MESSAGES=en_US.UTF-8;LC_PAPER=de_DE.UTF-8;LC_NAME=de_DE.UTF-8;LC_ADDRESS=de_DE.UTF-8;LC_TELEPHONE=de_DE.UTF-8;LC_MEASUREMENT=de_DE.UTF-8;LC_IDENTIFICATION=de_DE.UTF-8/LC_MESSAGES/rttr.mo"
Aborted (core dumped)