Mass-Messages do not show up

When I receive a mass-message from a user who sends to all on their list, it does not show up. It pops a new tab on the tab bar and turns it orange, but i get no text in the message window. Similar messages from Paltalk Notifier work normally.

I use paltalk express on Mac os 10.5.3 in fluid.app/safari using java 5.0 default.