Errors 8504,4 & 8500,105

I'm going thru my eight day of despair and hell ... It's been a couple of centuries since I ever had a Norton issue and suddenly Norton stoped working and displaying the error message "Unable to run this norton product"... Error (8504,4). I followed the help hints step by step and nothing! Only more errors, in fact during the several new and clean installs of NIS2009EN I tried they always end up when nortons is less than 10 seconds away from finnishing the install and a Java Fatal error occurs (and the install screen vanishes):

java.lang.OutOfMemoryError            <<no stack trace available>>

I'm really miserable! I have a 3years 3 pc's licence, both other pc's are fine, only one had a similar problem but after rebooting it 3 times it all went back to nornal.

 

The computer I'm having this issue is running with OS XP pro & SP3, I read that some have had a similar situation when updating to SP3 but my case is different, I had SP3 installed for a couple of months and using NIS2008 and updated to NIS2009 smoothly.

I tried several solutions and none worked :(((((((((((((((((((((((  Even tried in safety mode and got a different error 8500,105.

Also tried a trial of Norton 360 and it installed and worked fine one day, the next day the mess begun.

Can someone help me, please? :~(