Okay, seems like my half-hearted fix for non-english characters in your filesystem (ie. if you're using a non-English version of Windows) maybe causing GrooveWalrus not to load. Temporary solution is to download the following 2 files and overwrite the existing ones.
1. Right-click on these links and save these files somewhere.
file_cache.pyo
system_files.pyo
2. Copy the downloaded files to your GrooveWalrus\main_utils\ directory and overwrite the existing 2 files
ex. if you installed via setup.exe, the folder should be C:\program files\groovewalrus\main_utils\