Found the following validation problem for the NEWS.Rd HTML conversion:
NEWS.html:499:1 (inst/NEWS.Rd:238): Warning: missing </ul> before </div>
NEWS.html:66:1 (inst/NEWS.Rd:25): Warning: <h4> anchor "NEW" already defined
NEWS.html:121:1 (inst/NEWS.Rd:49): Warning: <h4> anchor "WARNING-FIX" already defined
NEWS.html:137:1 (inst/NEWS.Rd:58): Warning: <h4> anchor "NEW" already defined
NEWS.html:151:1 (inst/NEWS.Rd:64): Warning: <h4> anchor "TYPO" already defined
NEWS.html:166:1 (inst/NEWS.Rd:72): Warning: <h4> anchor "NEW" already defined
NEWS.html:192:1 (inst/NEWS.Rd:85): Warning: <h4> anchor "NEW" already defined
NEWS.html:212:1 (inst/NEWS.Rd:93): Warning: <h4> anchor "BUG-FIX" already defined
NEWS.html:227:1 (inst/NEWS.Rd:101): Warning: <h4> anchor "NEW" already defined
NEWS.html:238:1 (inst/NEWS.Rd:106): Warning: <h4> anchor "WARNING-FIX" already defined
NEWS.html:253:1 (inst/NEWS.Rd:114): Warning: <h4> anchor "WARNING-FIX" already defined
NEWS.html:264:1 (inst/NEWS.Rd:121): Warning: <h3> anchor "CHANGES-IN-+E2+80+98mbbefd+E2+80+99-VERSION-0.8-8.2" already defined
NEWS.html:268:1 (inst/NEWS.Rd:122): Warning: <h4> anchor "WARNING-FIX" already defined
NEWS.html:289:1 (inst/NEWS.Rd:132): Warning: <h4> anchor "NEW" already defined
NEWS.html:304:1 (inst/NEWS.Rd:140): Warning: <h4> anchor "NEW" already defined
NEWS.html:319:1 (inst/NEWS.Rd:148): Warning: <h4> anchor "BUG-FIX" already defined
NEWS.html:337:1 (inst/NEWS.Rd:157): Warning: <h4> anchor "WARNING-FIX" already defined
NEWS.html:352:1 (inst/NEWS.Rd:165): Warning: <h4> anchor "NEW" already defined
NEWS.html:370:1 (inst/NEWS.Rd:174): Warning: <h4> anchor "NEW" already defined
NEWS.html:385:1 (inst/NEWS.Rd:182): Warning: <h4> anchor "BUG-FIX" already defined
NEWS.html:400:1 (inst/NEWS.Rd:190): Warning: <h4> anchor "NEW" already defined
NEWS.html:418:1 (inst/NEWS.Rd:199): Warning: <h4> anchor "NEW" already defined
NEWS.html:437:1 (inst/NEWS.Rd:209): Warning: <h4> anchor "NEW" already defined
NEWS.html:455:1 (inst/NEWS.Rd:218): Warning: <h4> anchor "WARNING-FIX" already defined
NEWS.html:466:1 (inst/NEWS.Rd:225): Warning: <h3> anchor "CHANGES-IN-+E2+80+98mbbefd+E2+80+99-VERSION-0.5.0.1" already defined
NEWS.html:470:1 (inst/NEWS.Rd:226): Warning: <h4> anchor "BUG-FIX" already defined
NEWS.html:485:1 (inst/NEWS.Rd:234): Warning: <h4> anchor "NEW" already defined