When when trying to add or edit reports you could get a 500 error.
Also when trying to access pages such as example "Administration->Time filters", "Administration->Addresses", etc the following error is showed:
You may also get an "HTTP 500 Internal Server Error"
In your IIS logging you will see: Active Server Pages Error ASP 0131 Disallowed Parent Path
Network Flow Analysis
Enable Parent Paths is disabled in the IIS ASP settings.
This is due ASP configuration error where "Enable Parent Paths" is disabled.
To resolve the problem please follow the steps below: