First I want to say I love this program. Using Cubase 5 and Nebula 3 Pro. Everytime I save the nebula presets (I bought), then save the session when I open it back up the nebula is missing and the buss track I had nebula on goes from stereo to Mono. (doc fear, Tubes, Etc.) just lost a mix i did When I save the track with the free stuff I got from this forum (y10 vs, Angel hi)it stays on the track like normal. I just looked a post before mine and they said to take off the skin. The skin I have on is from the download section.
quad core 9200 8gb ram Asus Board 2 Gb Asus graphic card win 7 64bit
Why are you saving bought Nebula presets...are you changing parameters & saving with a different name as a new preset? Maybe you could give steps to replicate the problem with one Nebula instance in a new project & be specific about channel type & routing.