FirstTimelineMentionedInWorld doesn't look for preprocessors.

[Zeldack974]

This causes preprocessor conditions to not works at all and probably other problems.

Here an example of a fix

for (int i = 0; i < lines.Count; i++)
{
    var line = lines[i];
    if (!string.IsNullOrEmpty(line) && line[0] == '{' && line.Contains('}'))
    {
        lines[i] = line.Substring(line.IndexOf("}") + 1);
    }
}