Help:VE62
From TrainzOnline
Required container container-name is missing.
A container that should be included in the config.txt file could not be found. It may be missing, the container name may be misspelt, or it may be located at the wrong "level" in the file, for instance as the result of a mismatch in the pairing of braces ( { and } ).
For example:
! VE62: Required container 'thumbnails' is missing.
In some cases the missing container does not affect the functionality of the asset, and the message is a warning only.
For detailed information about containers, see: Category:Config Container