As I enter the notes in the dorico scores manuscript sometimes unable to hear the note

[dspreadbury]

Have you recently installed Dorico 4 and installed the HALion Sonic 7 sampler? If so, you may need to apply the workaround here:

Closing Dorico project causing program shutdown improperly; audio on left only

Hi @Xianmin_xkwauk, I checked back with the @Ulf and @dspreadbury and here is a first workaround to keep HALion 7 or HALion Sonic 7 installed (Windows only, I can provide a Mac version on request): To prevent any SteinbergMediaBayServer restart problems, here is a (zipped) bat file that starts it once and keeps it running. It needs to be unzipped and executed once after system start, before starting Dorico (you can put it anywhere you like, e.g. on your desktop and execute it from there): Sta…