Update 1 - We've spotted the likely cause and are working on a fix for this issue. In the meantime, you can use the following workaround to get back into Trove right away:

1. Install Glyph from this link: http://download.dyn.triongames.com/GlyphInstall-9999-1001.exe
2. Copy Glyph from where you installed it to the file path of the Steam installation. The default location is C:/Program Files (x86)/Steam/steamapps/common/Trove
3. Launch Trove again from Steam

Hey all,

Our team is working to address the issue preventing players on Steam from launching our games due to a missing Glyph files error.

This is their top priority and we'll post updates in this message as they come in.

Thank you for your patience!