MacOffice 2011 crashes on Mavericks
Thanks to the folks from bitprotect I got this solved by following their description. (in German here: http://www.bitprotect.de/loesung-abstuerze-von-office11-nach-upgrade-auf-macos-10-09-maverick/)

for all others, the short summary is:


disable MERP


Go to /Library/Application Support/Microsoft/MERP2.0  
open Microsoft Error Reporting.app
go to Preferences and uncheck "Enable Microsoft Error Reporting"

open Terminal
execute "defaults write com.Apple.Finder AppleShowAllFiles TRUE;killall Finder"
in Terminal go to /Library/Contextual Menu Items
delete all files and directories in this folder "rm filename" or "rm -r directoryname"
execute "defaults write com.Apple.Finder AppleShowAllFiles FALSE;killall Finder"


open office program and rightclick to check if it works. --> yes it does!

optionally you can now re-enable MERP.