It's probably a MySQL error, which you do not see.

Go to your /install/ folder and choose upgrade. It should add new types to the evo_hitlog table.

The upgrade did modify the hitlog table but it still didn't fix the missing stats in the admin panel.

I might reupload all the files again fresh after Uni today.

Reuploading all the files from CVS fixed it. I guess there must have been some old files that were causing issues.