Steve,
I am the only person in our office that Upgraded to Office 2003. After that Upgrade, I worked for days without problems accessing project data files. I sure hope this is not the problem, as some of the latest functions that they have promoted the upgrade to 2006, only work properly with the latest version of Excel. But I would like to hear from somebody that's using LDD 2006 and Office 2003, just to confirm that these two products are compatible.
Also, since my "Clean" install this weekend, I have not installed C3D or the C3D service Pack, LDD 2006. But the problem is still there. My next step may be to try to Uninstall Office 2003, just to see if that has any effect.
Jeff,
Yes, I had installed the LDD SP1 prior to C3D SP2 install and it was working okay for at least a week.
Okay guys, here's some SCARY news: I just found out this morning that somebody else here had the same problem on a computer two weeks ago. That computer had been working for years, no upgrades, no changes ... nothing, then, bam ... no access to the database info, with the same errors I've been getting. They didn't have time to troubleshoot it, so after they had no luck with a reinstall, they bought him a new computer and installed LDD 2006 on it. That system is working fine now, with no problems accessing the database info. I've been continuing to think it was somehow Upgrade related, but now I don't have a clue as to what's going on, or when it might show up on another computer.
I'm continuing to search for an answer, but I don't have much more time before I have to punt and do that ugly reformat thing and start over.
Ken