Douglet,
I've just solved the problem using Ramesh's post of much earlier this year
(this is probably too late for you, anyhow, but just in case!). He suggests
it for Help and Support, but it seems to have worked for User Accounts,
Search Companion and System Restore on my computer, as well.
Ramesh says:
For the Help and Support Center problem, see if these commands help, from
Start, Run dialog:
helpctr -regserver
regsvr32 itss
regsvr32 hhctrl.ocx
regsvr32 jscript
All the best,
Gumrat.