Shared Library Error driving me nuts

Hi I am new on this forum, hope you can help. I have a G5 10.4.10 and have always had office for mac 2004 on it. Since an itunes update I haven't been able to open any office documents. or an office application. I have spent several hours on the phone with applecare and with microsoft, they both blame each other.
"-<Microsoft Word><CarbonLib><CFMPriv_System><>"

Any of you heard of this error, microsoft aid it was an OSX issue in the sharedlibrary, and the last itunes/quicktime update crashed lot's of computers--because they also use the shared library. I have uninstalled, with applecares help cleaned up disk utility, etc, now it will not even install.

Last year this mac crashed completely under three year protection and Apple relaced everything. Now without the plan AND some important work documents I am pulling out my hair!

 

oops in the wrong place?

Is my thread in the right spot, just found the windows page?? I made an appointment for the genious bar for Saturday, so hopefully you guys will know what to do before that.Any help much appreciated,....thanks