"David Cebrian" wrote in
:
I have a problem with CDO, [...]

I am a VB.NET programmer, and my project is an Add-in for Outlook.

You should also know that CDO1.21 and Outlook officially won't work
together:

http://support.microsoft.com/kb/813349

Also, as the problems that arise are generally threading/memory
management mismatches, running this as an Outlook add-in is going to
make it even more complicated to work out what's going on. Quoting from
a post from an MS guy a while back:

"It's the sort of thing that'll mostly work. It'll work while you're
writing it. Then it'll work while you're testing it. It'll work while
your customer is evaluating it. Then as soon as the customer deploys it
- BAM! That's when it'll decide to start having problems. And Microsoft
ain't gonna help you with it, since we told you not to do it in the
first place. "

So you might get away with this, but I wouldn't want to rely on it.

-- dan