Muse Hub Sounds download location

Hi all,
I just changed the location of the MuseSounds Library to an external drive from the default location. Now Muse Hub doesn't start up again. It tries to install a new helper and can't connect to it. That's why it told me to reach out for support.

Here is what I did:
1. I hit the 'get' button for the string sounds.
2. When it took a while to download, I realized this was going to take a lot of HDD space and decided to use an external 1TB drive to store all sound libraries.
3. After the strings download concluded, I copied the 'Instrument' directory (top directory containing the strings) to the new location, deleted it from the default location, and redefined the location in the Muse Hub settings. I don't remember exactly, but this may have started a new download.
4. I quit Muse Hub, and after restarting, Muse Hub asked to install a new helper. I allowed this but it failed to install.
5. Now Muse Hub won't start up anymore.

Any ideas on how to solve this?
Thanks,
Jan

Note:
3 a. While doing that, I clicked outside of the browser window, which caused it to disappear. Right-clicking the path again to select Change Location, didn't work after that and I had to quit Muse Hub and restart it.