I have had zero problems with Encore CS3 on my OLD computer http://www.pacifier.com/~jtsmith/ADOBE.HTM
Premiere stuff, but may help
Start with these links on the RIGHT SIDE of the Premiere Forum
How to ask a question http://forums.adobe.com/thread/416679
Premiere FAQS http://forums.adobe.com/thread/424418
Premiere Tutorials http://forums.adobe.com/thread/424009
PPro Wiki http://premierepro.wikia.com/wiki/Adobe_Premiere_Pro_Wiki
PPro Help http://help.adobe.com/en_US/PremierePro/4.0/index.html
Also, this is aimed at Premiere Pro, but may help
A link with many ideas about computer setup http://forums.adobe.com/thread/436215?tstart=0
And even more hardware discussion http://forums.adobe.com/community/premiere/hardware_forum
Work through all of the steps (ideas) listed at http://ppro.wikia.com/wiki/Troubleshooting
If your problem isn't fixed after you follow all of the steps, report back with the DETAILS asked for in the questions at the end of the troubleshooting link
Plus, more reading
Fix Encore Win7 Problem http://forums.adobe.com/thread/528582?tstart=0 or direct to
http://kb.roxio.com/search.aspx?URL=/content/kb/General%20Information/ 000070GN&PARAMS
Long File Names Cause Crashing http://forums.adobe.com/thread/588273
Tutorial http://www.precomposed.com/blog/2009/05/encore-tutorial/
This THREAD goes back a bit, but there is a link in one of my replies, on similar error messages in the FAQ of the PrPro-Wiki.
Good luck,
Hunt
North America
Europe, Middle East and Africa
Asia Pacific