Found the following validation problem for the NEWS.Rd HTML conversion:
NEWS.html:1216:1 (inst/NEWS.Rd:708): Warning: missing </ul> before </div>
NEWS.html:41:1 (inst/NEWS.Rd:20): Warning: <h4> anchor "Misc" already defined
NEWS.html:58:1 (inst/NEWS.Rd:30): Warning: <h4> anchor "Misc" already defined
NEWS.html:86:1 (inst/NEWS.Rd:45): Warning: <h4> anchor "Misc" already defined
NEWS.html:114:1 (inst/NEWS.Rd:63): Warning: <h4> anchor "Misc" already defined
NEWS.html:154:1 (inst/NEWS.Rd:87): Warning: <h4> anchor "Misc" already defined
NEWS.html:178:1 (inst/NEWS.Rd:98): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:209:1 (inst/NEWS.Rd:121): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:253:1 (inst/NEWS.Rd:153): Warning: <h4> anchor "Misc" already defined
NEWS.html:276:1 (inst/NEWS.Rd:167): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:287:1 (inst/NEWS.Rd:172): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:299:1 (inst/NEWS.Rd:178): Warning: <h4> anchor "Misc" already defined
NEWS.html:329:1 (inst/NEWS.Rd:197): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:341:1 (inst/NEWS.Rd:203): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:371:1 (inst/NEWS.Rd:225): Warning: <h4> anchor "Misc" already defined
NEWS.html:391:1 (inst/NEWS.Rd:238): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:404:1 (inst/NEWS.Rd:245): Warning: <h4> anchor "Misc" already defined
NEWS.html:423:1 (inst/NEWS.Rd:256): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:461:1 (inst/NEWS.Rd:280): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:478:1 (inst/NEWS.Rd:290): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:494:1 (inst/NEWS.Rd:299): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:530:1 (inst/NEWS.Rd:322): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:542:1 (inst/NEWS.Rd:328): Warning: <h4> anchor "Tweaks" already defined
NEWS.html:563:1 (inst/NEWS.Rd:341): Warning: <h4> anchor "Tweaks" already defined
NEWS.html:579:1 (inst/NEWS.Rd:350): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:595:1 (inst/NEWS.Rd:359): Warning: <h4> anchor "Tweaks" already defined
NEWS.html:614:1 (inst/NEWS.Rd:371): Warning: <h4> anchor "Tweaks" already defined
NEWS.html:631:1 (inst/NEWS.Rd:381): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:667:1 (inst/NEWS.Rd:405): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:686:1 (inst/NEWS.Rd:417): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:702:1 (inst/NEWS.Rd:426): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:718:1 (inst/NEWS.Rd:435): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:768:1 (inst/NEWS.Rd:472): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:799:1 (inst/NEWS.Rd:489): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:829:1 (inst/NEWS.Rd:509): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:850:1 (inst/NEWS.Rd:522): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:865:1 (inst/NEWS.Rd:530): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:884:1 (inst/NEWS.Rd:540): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:899:1 (inst/NEWS.Rd:549): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:918:1 (inst/NEWS.Rd:559): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:938:1 (inst/NEWS.Rd:569): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:956:1 (inst/NEWS.Rd:580): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:979:1 (inst/NEWS.Rd:591): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:1000:1 (inst/NEWS.Rd:601): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:1024:1 (inst/NEWS.Rd:613): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:1044:1 (inst/NEWS.Rd:624): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:1060:1 (inst/NEWS.Rd:633): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:1071:1 (inst/NEWS.Rd:638): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:1088:1 (inst/NEWS.Rd:648): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:1102:1 (inst/NEWS.Rd:654): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:1124:1 (inst/NEWS.Rd:665): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:1139:1 (inst/NEWS.Rd:673): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:1150:1 (inst/NEWS.Rd:678): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:1165:1 (inst/NEWS.Rd:686): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:1176:1 (inst/NEWS.Rd:691): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:1191:1 (inst/NEWS.Rd:699): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:1202:1 (inst/NEWS.Rd:704): Warning: <h4> anchor "BUG-FIXES" already defined