Is coff2omf the issue?

src/sbbs3/ctrl/makelibs.bat

@@ -8,10 +8,9 @@ if '%1'=='' goto implib
 set dllsrc=%1
 :implib
 echo Creating import libraries from %dllsrc%
-rem implib -a sbbs.lib 	%dllsrc%\sbbs.dll
-coff2omf %dllsrc%\sbbs.lib sbbs.lib
+implib -a sbbs.lib 	%dllsrc%\sbbs.dll
+rem coff2omf %dllsrc%\sbbs.lib sbbs.lib
 implib -a mailsrvr.lib 	%dllsrc%\mailsrvr.dll
 implib -a ftpsrvr.lib 	%dllsrc%\ftpsrvr.dll
 implib -a websrvr.lib 	%dllsrc%\websrvr.dll
 implib -a services.lib	%dllsrc%\services.dll
-exit /b