Can it be possible that you had an old version of RiftGG previously installed? 

If it is first time you install RiftGG and you can't open it can be because the data base is causing a conflict. So please, try the next steps:

  • Close RiftGG
  • In your folder C:\Users\User_name\Documents\RiftGG you will find a folder called "db". ( To know how to access to this folder in a Mac, click here)
  • Create a copy of this folder in your desktop. Note that all your work is in this folder, if you delete it you loose it. Make sure you create this copy. 
  • Once you have created the copy, delete the folder called "db" in C:\Users\Username\RiftGG
  • Open RiftGG

Can you work normally? If so, please write to with you "db" folder attached and explain that it was causing conflict with the new software so they can recover your work.