Thats about it ...

Its the link order....

.... and genearally you'll be referncing the result of one project  within
that of another project.

.... You can set the build order - but i can't seem to achive this ? Has any
one any success on setting build order ???
I tend to rebuild every project individually in the order I choose ( a
matter of reflex now anyway)
Watch out if you use your own toolbox controls aswell, close and reopen
solution space on changes.