The second thing is to realize that the game engine is loading and parsing the contents of plugins in 'load order' sequence, though it may process different types of data in different passes through the 'load order'. In short the first two characters of a 'reference' or 'Form or Ref ID' are the 'mod index' of the plugin (in your specific 'load order') in hexadecimal form. This appears to hold consistent across the Bethesda line of games based upon the Gamebryo engine. Please read the short article Form ID which explains how to get the 'mod index' from the 'Form/Ref IDs'. The primary thing you as the user need to understand is how to identify which mod plugin the log messages refer to.

Any plaintext editor, such as Windows Notepad or Notepad++.

This article is about how you can identify the source plugin of those messages. How severe a problem that causes is unpredictable: but it can range from 'unnoticeable' to 'CTD' or ' 'freeze' in an endless loop'.

However, it does mean that something in the mod is not going to work as the creator intended. These 'warnings' did not cause the engine to 'break' or stop working through the plugin files. In most instances it will report it ignored or removed a variable or reference, or it didn't execute a script. The first thing to understand is that most are 'warnings' (if they aren't flagged as 'FATAL' or 'ERROR' somehow) that the game engine was not able to properly process something. Once you get an error log enabled (which varies by game), you will often find an astonishing number of logged entries. Other plugins should have this information in their documentation or 'configuration files', which may be located in a 'plugins' sub-folder under the script extender folder (e.g. (Please see the 'Checklist Item #4' entry in the wiki ' Fallout NV Mod Conflict Troubleshooting' guide regarding how to enable 'NVSE' logging. Such are often not automatically enabled, as writing logs to disk is one of the slowest things a game can do, so they usually have to be enabled by you, the user when troubleshooting. Examples are 'nvse_steam_loader.log' (created when the 'New Vegas Script Extender' (NVSE) is used to start the game), 'NVSE.log' (a short and simple 'NVSE plugin initialized' report), and others as the authors find the need. Then there are logs that 'addons' to the game generate, such as 'script extenders' and their plugins. These are automatically generated and located in the game root folder (where 'FalloutNV.exe' in this instance is located). For example, 'Fallout New Vegas' (FNV) has the 'falloutnv_error.log' (which it builds as the game is starting), and 'falloutnv_havok.log' (which it builds as it renders art assets). There are often more than one kind of error logs produced by your game.

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