I have Shoutcast2 and using liquidsoap installed on Centos OS Plesk but I'm getting an error when having a second stream on AutoDJ

2015/04/19 18:45:00 [output_stream2:2] Connection failed: could not write data to host: Connection refused in write()

sctrans2 works ok and liquidsoap works ok on my other server Centos OS.

Any idea on a fix as I have uninstalled fully and reinstalled with the same error.

That's probably because you are using the newest Shoutcast version (v. 2.4.7) which is not yet supported by Centova Cast. It's actually one of the few things that are not working at the moment: having more than one Liquidsoap source for a single station

Thank you for clearing that up.

Is there a way of getting centova to install the previous version?

Here's a download link for the previous Shoutcast version:
http://download.nullsoft.com/shoutcast/tools/sc_serv2_linux_10_30_2014.tar.gz

Just replace your /usr/local/centovacast/shoutcast2/sc_serv with the sc_serv file from the tarball provided above and After that run the following commands:

cd /usr/local/centovacast/shoutcast2

chmod a+x ./sc_serv


And finally you might need to install some missing 32-bit libraries (if you get an error when you try to start a start a station):
The way of installing Glibc for 32 bit varies depending on your Linux distribution.

For CentOS 5.8+ / 6.x run this:
yum install glibc.i686 (or if it doesn't work try "yum install ld-linux.so.2")

For older CentOS, RedHat and Similar:
yum install lib32-glib

For Debian and similar:
apt-get install ia32-libs

or if that didn't work:
apt-get install libc6-i386

After that restart your stations so they start using the new version and your problem should go away.