Hmm, all I know about your system now is, that's an A4000 030, AGA and probably a 256 color screenmode and sufficient memory. Or do you have a graphics card ??
Is your startup-sequence "top secret" or why can't you post it?
If you really have a graphics card then you won't need and, of course, should not install FBlit. But up to now you didn't give me enough information to analyze your problem.
ClassicWB could be an extra problem, at least, if it uses the old Scalos 1.2d instead of the Workbench.
@AMIGASYSTEM
I don't think that it is a good decision to disable color icons and block MWB colors.