I am working on modding an event for BtS. Here is the error I get when starting a new game with my mod:

(I actually had three critical errors, the others were because these critical errors kept all of the invormation on events from loading)
First error window:

LoadXML call failed for Events/CIV4EventInfos.xml

Second error window:

Tag: TECH_CIVILSERVICE in info class was incorrect current XML file is:xml\Events/CIV4EventTriggerInfos.xml

(I had another one for TECH_BRONZEWORKING...these were both in the orPrereq section of my EventTriggerInfos.xml for the event.)

Third error window:

Failed Loading XML file xml\Events/CIV4EventInfos.xml

[.\FXml.cpp:133] Error parsing XML File -
File:xml\Events/CIV4EventsInfos.xml
Reason:Element content is invalid according to the DTD/Schema.[]
Expecting:{x-schema:CIV4EventSchem.xml}BuildingClass.[]

Line: 23962, 34
Source: -


Please help me, thank you!

Well, a schema problem usually means you've put in a tag that doesn't belong in that file, or you've left out a required tag. Another possibility is that if you named the event "TECH_CIVILSERVICE" it could be clashing with the actual tech of that name. The event should probably be named "EVENT_CIVILSERVICE" or some such. Without seeing your XML files, though, these are only guesses.

I found out the problem, I think...I am building a mod, when I should be trying to set this up as a modular piece of xml and python code. As a mod, I have to copy allot of the original game data...and I think that's causing a conflict, since the game also runs the same xml and python files, so the files that are not uniquely named conflict via the schema files.

I'm going to try just building a modules folder in custom assets and hope it lodes as just the xml and python, modularly loaded with the other game files...fingers crossed.

Down to just a few errors now...found out how to get it done as a mod, but am still running into some frustrating errors.

Here are some screen captures:
157823
157824

Here is the zip of my tiny mod in progress:
157828

It tells you the line, it tells you what it's expecting and it tells you it's getting something else... not too difficult to solve based on that.

The problem is this:
<UnitClassPromotions/>
Since it ends with /> this means: There are no UnitClassPromotions. Don't look for any.
Then, on the next line, you have:
<UnitClassPromotion>
But you already said there aren't any, so it's not looking for it.

<something> <-- this has a value, look for it.
</something> <-- this ends the value, look for the next one.
<somethingelse/> <-- this has no value, look for the next one.