I hope NOT to install this problem!
Maybe this will be a new line of posts, MEMO's.
EDITED 1/2 hour later: Found reference in forums to an error after some further searching.
Try removing C:\Program Files\Common Files\Installshield\Universal\Lotus* folders.
It will help in case this error is the result of the messed up installation.
Found we had 3 previous versions, including 802 listed, deleted them all and install went through fine.