Hello, all! I did the following on an Arch Linux yystem: MonetDB-Oct2010-SuperBall-SP1> ./monetdb-install.sh --enable-xquery ... make[8]: Entering directory `/var/tmp/MonetDB-1299754542/MonetDB-client/clients/ src/ruby/adapter' mkdir -p /home/myuser/MonetDB/lib/ruby/gems/1.9.1 gem install --local --install-dir /home/myuser/MonetDB/lib/ruby/gems/1.9.1 --forc e --rdoc activerecord-monetdb-adapter-0.1.gem ERROR: While executing gem ... (Encoding::UndefinedConversionError) U+2019 from UTF-8 to US-ASCII Successfully installed activerecord-monetdb-adapter-0.1 1 gem installed Installing ri documentation for activerecord-monetdb-adapter-0.1... Installing RDoc documentation for activerecord-monetdb-adapter-0.1... make[8]: *** [install-exec-local-activerecord-monetdb-adapter-0_1_gemspec] Error 1 ... Setting LC_ALL to UTF-8 fixes my problem. --- monetdb-install.sh.orig 2011-03-10 13:34:58.000000000 +0200 +++ monetdb-install.sh 2011-03-10 13:35:05.000000000 +0200 @@ -108,7 +108,7 @@ : ${FETCHCOMMAND:="wget --progress=dot:mega -t 5 --passive-ftp -O \"\${FILE}\" \"\${URI}\""} # make sure we get English error messages and so on -export LC_ALL=C +export LC_ALL="en_US.UTF-8" # parse command line options ORGARG=$*