libstdc++.so.3 => not found on CloudLinux

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http://unix.stackexchange.com – I am trying to install the Linux x64 BOINC command-line interface client on a CloudLinux machine with x86_64 Architecture. When I try to run the executable I get an error: ./boinc: error while loading shared libraries: libstdc++.so.3: cannot open shared object file: No such file or directory When I do ldd of the boinc executable I find: libstdc++.so.3 => not found When I do yum install compat-libstdc++-33 I get CRITICAL:yum.cli:Config Error: Error accessing file for config file:///etc/yum.conf How can I fix this? (HowTos)