Multi lingual makes manufacturers disappear

[Cynthia_]

I added a second language (Dutch) to the first language (English), which made all manufacturers dissappear. No problems with products and categories. (J1.7.2 stable, VM2.0.2 stable)

[Studio 42]

Try to switch the language in FE, because the language reflect always your Joomla front-end settings.
If you changed the default FE language and never set the manufacturers in the default lang this are simply not found and not displayed.