Preview crashes on Print command
My Preview on Lion was crashing on Print. The stack in the crash log shows:

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   jp.co.canon.bj.print.v710a.pde.QualityMedia 0x060b52ae CBJ_SetDispValue(BJPDEMainContext*) + 44
1   jp.co.canon.bj.print.v710a.pde.QualityMedia 0x060b4820 CBJ_QualityMediaPDEPluginFactory + 1064
2   com.apple.print.framework.Print.Private 0x0654f709 0x6537000 + 100105


I tried upgrading to the most recent drivers from Canon's MX850 page. No luck.

I opened "Get Info" from the Finder, with Preview selected, and saw I had set it to "Open in 32-bit mode". I unchecked that box. Now Preview prints again.