Create a copy of your Nebula plugin file (Not Nebula Reverb) and its respective xml file. Rename them both to „Nebula Compressor“. Open the xml and add <UP> 1 </UP> right below <MAGIC> xxx </MAGIC>. Now change the <PROGRAMRATE> value from 2000 to 100 and save it. You have just created Nebula Compressor which you can load the „NC“ versions with.