VST pluggin for VoiceTrack

Hello there,
I charged the VST of StereoTool for the VoiceTrack.
When I on it and go to configure, I can select a preset. But when I close and go again, no preset is selected…
And in StereoTool I can not save the preset I do or load an other preset from a separate file.
In voicetrack procedure, the processing say “processing” but no preset in OK so the sound is not processed.
Maybe there is something to do in MairList ?
I use StereoTool on the MairList server and all is OK with my 5 stations for the final processing.
Thanks for help
Pierre

Do you use it there as a VST plugin, too?

Please note that mAirList can work with VST-2, 32 bit plugins only.