When I tried to upgrade my Notes client from 8.5.1 to 8.5.1 FP1, I got the error
Notes Hotfix did not install. Error encountered when installing Notes Hotfix Core component.
The fix for this is quite simple (on Windows, anyway). Go to task manager, and stop the NSD process. Then the install will work just fine. (clearly you have to have Notes itself stopped while the upgrade is done. Upgrade took about 5 minutesm and everything worked as expected afterwards - including all my sidebars.
I expect that you'd also be able to get round the issue by rebooting and installing FP1 before starting Notes. I tend to restart my machine pretty rarely, because Windows takes so long to start. I just suspend it by closing the lid, and continue by opening the lid and signing on again. 30 seconds max.
Mick Moignard February 2nd, 2010 06:10:13 AM