Problem with testbuild is, that you need to disable quickbuild afterwards, because the "head bmx" is compiled differently. You can not link against that object file later for a bmx that is importing this bmx.
For that reason I try to not compile the wrong bmx as "head" or should I say: blide normally takes care of it, only work with MaxIDE / MaxIDE CE on single or 2 file projects.
For that reason I try to not compile the wrong bmx as "head" or should I say: blide normally takes care of it, only work with MaxIDE / MaxIDE CE on single or 2 file projects.