Installation wizard started.
Status
Creating Shortcuts
ERROR MESSAGE
wARNING 1909. cOULD NOT CREATE lIBRE oFFICE 6.1.LNK. Verify THAT THE DESTINATION FOLDER EXISTS AND THAT YOU CAN ACCESS IT.
I pressed OK and then
ERROR MESSAGE
Internal error 2902. ixoShortcutPropertyCreate
Then
Rolling back actions.
After which my old copy of LO had also disappeared
Have you check FAQ - especially section about Disable antivirus which mentions error 1909 and 2902 explicitly ?