Hello again, thanks for sharing the error message. It seems that for some reason the game is not loading some configuration files. All data the game needs to load (enemies, waves, etc) is in some specific files, if for some reason the files are not there (could be some missing permissions on the file system that prevents the game from creating those files) you'll get these types of errors. Long story short, I'll have to make some fixes on the next build to have some contingencies for this scenarios.
Sorry again for this, but it seems I cannot be much of a help until I fix this issue :(