[Wine] Cannot install MS office

[mno]

I cannot install MS office under wine 1.1.41 
I get the error 	
wine: Call from 0x7b836483 to unimplemented function rpcrt4.dll.I_RpcExceptionFilter, aborting

Installation wizard starts fine, error appears after clicking on
"install now"

Changing rpcrt4.dll for a new windows one did not help.

Somewhere in the net is the suggestion to restart wine from scracth
on a new tree by renaming .wine to .wine_old
I don't think I can do that, I have other functioning packages that
would then be lost.

Some help?