After finishing installing projectpier 0.8.8 , i found that i can't manage to add new project. It's because i don't set the option 'can manage project' for my administrator user. After i set it, the problem gone. It really wasn't a big problem, though i must go to 3 level just to set it.
here i give the screenshot step to enable 'can manage project' (here i use 'rio' account):
1. Select and click Update Profile from View rio. Find button 'Edit Contact' on the end page and click it.
2. in 'contacts' section, find 'edit user account' and click it.