After I create a preset for a Halion Sonic SE multi and save it, I have no problem resaving it as long as the project remains open. However, if I close and later re-open the project and then try to save the preset, Cubase freezes. I have to kill the process and/or re-boot to clear it. This appears to be a problem unique to Sonic. I have no problem re-saving presets for other plug-ins. I’m using Win 7 and 64-bit Cubase.
I also just figured out, I cannot re-save the project either after I open it the second time.