##### Page tree

Redirection Notice

You need three things to check, before starting to install Compound Registration: minimum system requirements, existence of a home directory and if the database is properly set up.

# 1. Environment

It is assumed that the application server is properly set up with a compatible version of operating system, Java environment, and Apache Tomcat. Please make sure your system meets the minimum requirements to run Compound Registration.

# 2. Compound Registration home directory

Home directory must be set up using the environment variable REGISTRYCXN_HOME. Since CompReg version 17.06.12-1738 external resources of the registration system will be loaded from the home directory of the application.

Home directory must be an existing directory with read and write access rights. In case the home directory is not provided - or not meeting the requirements above - the application will start, but the user interface will display an error related to invalid application state. The log will contain the error entry of the exact problem related to the home directory settings. You can specify any location on the disk, but please be sure to specify an absolute path. If Tomcat was running while you defined the environment variable, a restart might be required.

## How to set up the environment variable?

On Unix based systems, type into the command line interface: export REGISTRYCXN_HOME=/Users/johndoe/.chemaxon

On Window, type: SET REGISTRYCXN_HOME=C:/path/to/any/directory