No sound in Tonalic preview in Cubase Pro 15.0.30

Hi everyone,
I noticed some users are still struggling with the Tonalic ARA preview being completely silent in the Right Zone after the Cubase 15.0.30 update.
I experienced the exact same problem, but thanks to a helpful user in another thread, I learned a workaround that instantly fixes this issue. The cause seems to be a compatibility bug between the Tonalic ARA engine and Cubase’s 64-bit float processing.
Here is how to fix it:

  1. Go to Studio > Studio Setup…

  2. Select Audio System on the left panel.

  3. Under Advanced Options, look for Processing Precision.

  4. Change it from “64 bit float” to “32 bit float”.

  5. Click Apply / OK.

  6. Close and restart Cubase for the changes to take effect.

Once you switch to 32-bit float and restart the application, the Tonalic preview sound should start working perfectly right away.
While 64-bit float is ideal for high-fidelity mixing, using 32-bit float as a temporary workaround will allow you to use the ARA preview without any practical audio degradation while composing.
Big thanks to the user who originally shared this solution with me. Also, I want to mention that I have been communicating with Tonalic support regarding this issue. I shared this specific workaround with their team and strongly requested that they release an update to fully support the 64-bit float setting as soon as possible. I hope this helps anyone who is currently stuck!