Some checks for return codes are missing.
Examples:
Would you like to add more error handling for return values from "fputs" like in the function "LogMsg" and from "fflush" in the function "LogPrint"?
http://j1699-3.cvs.sourceforge.net/j1699-3/j1699/LogMsg.c?revision=10.4&view=markup
http://j1699-3.cvs.sourceforge.net/j1699-3/j1699/LogPrint.c?revision=10.5&view=markup