Table 3-1 lists of the loader messages. These are divided into command line errors, link errors, link warnings, and object module errors. Object module errors are caused by a bad object file; you should check the file name and/or assemble and link again.
The object or library file on the invocation line cannot be found. Maybe the wrong extension is assumed or the file is in a different directory.
Can't find Symbol/Module specified by extract or extractsymbol command.