JetDV:

Steps I took:

1.) Uninstall Vegas 5.
2.) Delete old Vegas 5 Program Files directory.
3.) Install Vegas 6
4.) Install Excalibur 4.

Now, when you go to execute script via the script menu, there are two (2) Excalibur items on which you can click to invoke Excalibur. If you click on the generic-looking script icon, you get an error that reads:

Warning: An Error Occurred during execution of the script C:\Program Files\Sony\Vegas 6.0\Script Menu\Excalibur4\Excalibur.dll

Followed by the message:

System.ApplicationException: Failed to create instance of main class: 'EntryPoint'.
at Sony.Vegas.ScriptManager.Run(Assembly asm, String className, String methodName)
at Sony.Vegas.PrecompiledScriptManager.Run()
at Sony.Vegas.ScriptHost.RunScript(Boolean fCompileOnly)

If, however, you click on the purple icon instance of Excalibur, Excalibur starts fine.

What is the problem?

Thank you.