[NTG-context] bibtex doesnt find stylefiles in TEXMFHOME on context standalone

hello list, i recently installed the lastest beta (2012.03.05) as standalone alongside TexLive with the latest stable version (2011.05.18) i use some custom stylefiles ( bst and bibl) for bibtex that are placed in my TEXMFHOME Directory that is $HOME/Library/texmf on osx. now context beta finds all the files in my TEXMFHOME but bibtex doesnt. i guess this has to do something to do with kpathsea etc. but i'm very new to TeX and am a little bit lost here. can sombody guide me in the right direction how to solve this. i did run mktexlsr but this doesnt helped. thanks michael