Metadata errors when trying to access a cube via SSMS

I recently found a cube that you could not query. No MDX, No SSMS feedback, nothing... (Yes, I had permissions to access it)

Short solution

Moved the XML files in the cubes data folder to a backup folder somewhere else (you can delete, but you may need these files later). Then, I restarted SSAS service, reprocessed the cuby, and voila!!!