From my understanding, you removed a .zip and a .pck and replaced them with an .exe in the update? the .exe doesn't work on its own for me, here's the exact error I get:
Error: Couldn't load project data at path ".". Is the .pck file missing?
If you've renamed the executable, the associated .pck file should also be renamed to match the executable's name (without the extension).
From which I assume you should either enable the "embed pck" checkbox on export settings, or provide the .pck file to download