Re: mke error (toolsubs.dlo)

dsm:

Function which shows as "Unresolved symbol" belongs to own library "lmlib.h"

In which case you must have a library file 'lmlib.lib' or whatever.  You have a linker error.  You must tell the linker where to find your library.

If your application built successfully in a previous version of MicroStation, then your bmake file for that build must contain the instruction to the linker.