[PLUGIN: WordPress Importer] Import fails for every item

Hi,

I am trying to import an export from a custom CMS using the WordPress WXR format.

The importer reads the file, but for every single item on the list it returns:

Failed to import Post “[POST NAME]”

I am choosing to import as “admin” and not to download any media.

Is there a log somewhere that I can see why it failed?

Thanks,
Robin