Hi all,

Sorry if this has been posted before, I’ve been trying to solve this Keyscape issue I've been having for a while.

The main STEAM/Keyscape Library is working fine and all keyboards play correctly, except Double Felt Grand. After installing the 1.5 update, I keep getting the “cannot load SoundSource” error for Double Felt Grand, even though the .db file is present in the STEAM folder.

Deleting zmap.index doesn’t recreate the index for me, and since all other instruments work correctly, I’m assuming Double Felt Grand just needs to be added to zmap.index manually.

Does anyone know how to fix this?

Thanks very much.

 

Last edited by a moderator: Jan 30, 2026 at 2:26 AM

In the comments from the link you posted it does say the following:

so maybe updating to Patch Library 1.5.1c may solve your issue and making sure all is upto date

 

Last edited: Jan 29, 2026 at 7:58 PM

On the Keyscape splash screen what does it say you have installed? Mine says this...
Keyscape Software v1.5.2c
Keyscape Soundsources v1.5.1c
Keyscape Patches v1.6.1c
If yours says anything less than this, i recommend updating all parts of Keyscape.
I created a guide for this, to make it easier to get the full version installed.