What I see so far:
1) Don't use manual sound sets.
2) You need to use the sound set provided with the Template: "VDL SoundSet 7.0a", not "Virtual Drumline 2.5".
3) Please review the Readme file again, particularly the Playback Configuration setup section. (And remember, you can use the TriggerTest files to help verify your setup.)
4) After you've done that, attach a screen shot of your new Playback Configuration.
If your Playback Configuration is setup correctly, then Sibelius will properly do all the patch auto-loading for you - no need to track slot assignments, etc.