[NTG-context] Strange reference (\in ...) problem

Hello, I have \startcomponent foo \placeformula[eq:bdy:elf:Csigma-def] ... \informula[eq:bdy:elf:Csigma-def] % this works \stopcomponent \startcomponent bar \informula[foobar] % refers also to an eq. in 'foo' and works \informula[eq:bdy:elf:Csigma-def] % this one does not \stopcomponent I defined \def\informula[#1]{(\in[#1])} in *.tuo I have \mainreference{}{eq:bdy:elf:Csigma-def}{1::0:2:3:1:0:0:0::17}{23}{2.22} and in the log I get: references : unknown reference [][q:bdy:elf:Csigma-def] This is with ConTeXt ver: 2004.1.2 and also with ver: 2004.1.13. Any ideas? Tobias