Thread:Project:Support desk/Problem Upgrading from 1.16.1 to 1.18.3/reply (2)

An update from 1.16 to 1.18 should not be too difficult. Replacing all files and then running the DB updater sounds good. Now you might have incompatible extensions or skins installed, which still need adjustements.

When you get a white screen without any output a good start to debug this is to turn on error logging in PHP. Then have a look at the PHP error log. It will show you the error, which is happening when you try to view your wiki. Then this error must be fixed.