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Administration Menu »» System Admin »» General Settings »» Debug mode »» Enable debug (inline mode).
This will give you the PHP debug messages. Warnings are not important to end users, just ignore them. What you want to look for are Error messages.
Find the Error messages and post them here. Make sure you remove any sensitive information like your home directory name. With that info, we can help you troubleshoot where the problem is.
Insanity can be defined as "doing the same thing over and over and expecting different results."
Stupidity is not a crime. Therefore, you are free to go.