From Array Suite Wiki

The mono libgdiplus package must be installed (either using yum, apt-get, or installing from source at libgdiplus). In addition, the mono config file must be edited to explicitly specify the location of libgdiplus.so.

cd /opt
wget http://download.mono-project.com/sources/libgdiplus/libgdiplus-2.10.tar.bz2
tar  jxvf   libgdiplus-2.10.tar.bz2
cd  /opt/libgdiplus-2.10
./configure  --prefix=/opt/libgdiplus-2.10
make  install

If installing from source, you may need to add the "/libgdiplusPrefix/lib" to the shared library search paths, and check to make sure libgdiplus library is on the shared library search paths. To check, type

 $ ldconfig -p | grep libgdiplus
     libgdiplus.so (libc6,x86-64) => /opt/libgdiplus-2.10/lib/libgdiplus.so

Here the libgdiplus is installed at "/opt/libgdiplus" and has been set correctly. If not, one way to add it to the shared library path is by doing this (with root privilege),

 echo "/opt/libgdiplus/lib" > /etc/ld.so.conf.d/libgdiplus.conf

If installing from yum, it may be necessary to additionally install the following:

yum install libgdiplus
yum install libungif libungif-devel

Edit mono config to point to libgdiplus

To connect mono and libgdiplus, modify the following config file: /opt/mono-6.12.0/etc/mono/config: Add the following line at the end of the file before </configuration>

<dllmap dll="gdiplus.dll" target="/opt/libgdiplus-2.10/lib/libgdiplus.so"/>

Further details can be found here, including a description of the error message if this is improperly performed.