I have tried to install software from Tachomaster, which has a local postgresql database included with it

When it tries to install the database I get the message:

rrSQL.Connect : Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.

Tachomaster support tell me that this is telling them that their software is unable to connect to its postgresql database for some reason

Has anybody any idea as to why this may be?