Created attachment 65522 [details] Word document with pasted in WIN7 error messages. I had LibreOffice 3.5 installed and running fine. Loaded 3.6 to upgrade. After apparently successful install, I received a fatal error on running it. Multiple un-install and re-installs with careful cleaning and registry checking didn't clear the problem. Re-installed 3.5 and everything works fine. I don't know what to do other than wait for a clean up release. My other computers are running fine. Same OS same firewall on the systems but this one is different. Dennis
*** This bug has been marked as a duplicate of bug 53006 ***
Unhandled exception: InvalidRegistryException: file:///C:/Program%20Files%20(x86)/LibreOffice%203.6/program/../share/extensions/wiki-publisher/components.rdb: duplicate <implementation name="com.sun.star.wiki.WikiOptionsEventHandlerImpl"> ... That means this issue is indeed due to the same root cause as bug 53006, even if that bug's title does not necessarily make one think so. Please see the item on "Various problems with bundled extensions" at <https://wiki.documentfoundation.org/ReleaseNotes/3.6#Most_annoying_bugs> for a workaround.