RonaldPB

I forgot to mention that after reopening Cakewalk you may need to use the Re-track button on Autotune.

Thanks John. That's a good suggestion. Have tried it but same result. The workaround I discribed above (save the created region, stop Cakewalk and open it again) is only working for my system. The suggestion made by Glenn needs some studying on my part. There's plenty of memory (64GB) and SSD drive space (4TB) on my system.

Frustrated by the inability to make regionFX work for autotune under Cakewalk I may have found a way to work around this bug. Let me show: Step 1: first I created a new project in cakewalk and an audio track:See first picture. Step 2: then I created a region FX for Autotune see second picture. nothing works at this point in Autotune. Step 3: But still: save the file and close Cakewalk Step 4: When you have a look at the taskmanager, you see Cakewalk is still active even after you have closed it, Close Cakewalk now in the taskmanager (or do a restart). Step 5: Open Cakewalk once again . Now you see the audio in Autotune and you can work with it as aspected.

Frustrated by the inability to make regionFX work for autotune under Cakewalk I may have found a way to work around this bug. Let me show: first I created a new project in cakewalk and an audio track:

I'm having the same problems. Autotune works OK when using the Insert Audio FX option, but when you try to make a region of an audio track the result is as show above.