Lou Storrow

I had this same problem this morning. Tried run as admin, updated windows 10 x64, tried the redistributable repair. Nothing worked. I did not do a clean install, but instead went into my downloads and ran the August CW update. It apparently installed the prior version of CW and that got CW to start. No idea what the problem is, but it seems to involved the Nov 30 update.

I recently built a new PC - Giga-Byte Aorus Elite board, Intel I-9 10850K, 32GB RAM, Sapphire Pulse Radeon RX 580 8Gb, RME Fireface UCX via USB. Seemed to be working but today using Cakewalk all keyboard input is delayed to audio by around 500ms (hit key, wait for sound), and when I click on a midi note on screen (PRV) the sound is delayed 500ms or more. RME Firmware update done, current USB Driver installed (1.1.68.0 dated Jun 2019) Tried PreSonus Studio One 5 to see if problem existed there too. No delay between note trigger and audible response. Anyone have any ideas?

New problem. In PRV, when I play keyboard, there is no animation of keys on the display as I play. MIDI echo is on and the sounds plays normally , but keys don't go gray. I can click on keys with the mouse and they play sound and animate with parallel white lines as normal. Has something changed? Have I missed a setting? This has never happened before.