Hello Jeffrey,
My name is Jeffrey Chang and I am very interested in TTCN-3 Parsing. I
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it turns out, your mail has been tagged as spam. Thus, here is the answer again that i sent to you personally.
The plug-ins you have chosen should be sufficient. Currently, i can think of two things that may go wrong: you could be using the wrong Eclipse version. TRex requires Eclipse 3.2. It won't work with any earlier version and has not been testen with the 3.3 milestones. So i simply suggest to use Eclipse 3.2.2. Furthermore, you need to have a proper configuration for the second Eclipse instance. You can either go for "Launch with all workspace and enabled external plug-ins" or you can manually select the trex plug-ins and then click "Add required Plug-Ins" on the right side.
Also, you may want to launch the TRex product, i.e. in the launch configuration, select de.ugoe.cs.swe.trex.ui.trex in the "Run a product:" combobox.
You also may want to add one of the compiler plugins from the svn repository. Both aren't finished, but you'll have select an active compiler if you want to get rid of the "no compiler selected" message that appears once it works.
I just had a fresh update and used your configuration and could use TRex without any trouble. So if these hints did not help, please let me know and tell me a few more things about your configuration.