View points won't switch

 From:  Jacob (JACOB_H)
7995.1 
I haven't used MoI recently but when I was previously using it just after V3 came out it was working fine.
Now when I use it the 4 different angles you can view the grid at don't change when I select the different views from the bottom bar.
The only one that i can change to is the 'right' angle the rest don't respond.
Not quite sure why this is happening, is there a way just to do a clean install, or any suggestions to resolve the issue?
Thanks