Problems with parpool: unknown host name

Hi

For security reasons at work I had to install some programs on my computer, which runs Ubuntu 14.04. This for some reason required changing my host name in the /etc/hostname file. Now parpool will not run; I get the following error:

Error using parpool (line 99)
Java exception occurred:
java.net.UnknownHostException: henrik: henrik: Name or service not known
  at java.net.InetAddress.getLocalHost(Unknown Source)
Caused by: java.net.UnknownHostException: henrik: Name or service not known
  at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
  at java.net.InetAddress$1.lookupAllHostAddr(Unknown Source)
  at java.net.InetAddress.getAddressesFromNameService(Unknown Source)
  ... 1 more

I do not know what my original hostname was - is there a way to find out? Or is there a way to make parpool work with my current hostname?

Thanks in advance

Henrik