So how did you remove the language pack? There a language pack install and remove feature in the UI.
D-Link is a regional company. So support and language, even though mostly global, doesn't necessarily reach across each region with in there company. It's how D-Link handles there company. Doesn't hurt regional sales I presume and would be presumptuous of you to assume so since you probably don't work for D-Link.

Glad you got it working. Enjoy.