Hi Dave,
Thank you for your response.
The software I am trying to install is RabbitMQ and the installation runs fine and the product gets installed but if the environment variable RABBITMQ_BASE is set, certain components should be installed in the directory set as value for the variable.
The installer runs but does not pick up this variable so it uses the default path instead.
The installer is NSIS (Nullsoft Scriptable Install System) and the variable is RABBITMQ_BASE.
I am currently looking for the log files but I haven't been able to find them yet.