Is this issue you are highlighting the empty toolbars?
I think I had this issue on a single toolbar and I think what fixed it for me was selecting View -> Reset Row Height to Default. Worth a try.
I believe there are per user Vixen settings. On my machine they are located here:
C:\Users\<User>\AppData\Roaming\Vixen
I would try renaming this directory to BACKUP_Vixen.
I have seen similar issues when changing screen resolutions (I mention in case that's relevant). Eg. I normally use a 1920 x 1080 external screen, but the laptops's native is lower. That can do screwy tings with the toolbars.