If you're crashing as soon as you click the button to Share (and not during the burn itself) it usually indicates a resource problem.
What operating system are you using? Have you manually gone to Windows Update and downloaded even the non-critical updates?
Have you ensured you have the latest version of Quicktime?
How much free, defragmented space is on your C drive? Are you editing your video on a drive rather than your C drive?
I'm assuming, since you're using a 4 year old version of Premiere Elements, that this is an older machine. When was the last time you gave your computer a good cleaning and defragmenting?
Forget about Premiere Elements 6 and use Premiere Elements 4, we still do on a new 64 bit Quad Core i7 Work Station Windows Professional and it runs better than ever. We have been doing HD 1920 x 1080 slide shows for 3 years, no problems burn to Blu -Ray or Export to Pro Tape.
I did have a problem with a Pentium 4 3.2Ghz and hyperthreading , but, discovered I had 1,440 temp files slowing the system down. Try %temp% in Search and delete files if you have any ?
I would pay special attention to Steve's question on the amount of defragmentd free space on the HDD's. If you have been working with this Project, and have burned several times, it is very likely that the HDD has become filled up. PrE needs quite a bit of space for the working files, for the Transcoded Assets, and then for the resultant files for the DVD.