OWS throws up the dialog in the attachment.We regularly get this error when running applications that require "Java".
This could be because OWS is started with JVM max heap size -Xmx which is exceeding the size of available memory on your machine.
You should also check if in your javaws-vmoptions file (in OWS install Dir) there is a parameter -Xmx which has value larger than your machine’s available memory (RAM).
One option is to make sure your machine has enough RAM or make sure that no other apps are running when you start this app.