Lumen wont export to WAV (Magix Acid 11)

Hello…I use Magix Acid 11 (the latest version) for my MIDI editor and it loads VSTi instruments fine and Im able to render to WAV…..However, something weird happens with Soundbox/Lumen: I load the VSTi and it wont play the MIDI notes I write/no sound…but the “keyboard” graphic will play manually….Heres where it gets weird: If I reload Soundbox/Lumen, it will now play the notes I wrote on the track and I hear playback fine…However, as soon as I go render to WAV, the WAV file is blank and, once again, it stops triggering from the MIDI screen…Its bizarre, strange, and has me perplexed…Any help is appreciated, thanks