I use MOD 2000's package and deployment tool to package and deploy my A2K database. I included all the libraries referred to in VBE's Tool->References. The installation ran smoothly except two instances where an error message occurred:

"An error occurred while registering the file C:WindowsSystemmsado15.dll", and
"An error occurred while registering the file C:WindowsSystemmsadox.dll".

I was asked to Abort, Retry, Ignore it.

However if I ignored it, the database ran fine after installation.

This occuured even in desktops which I installed repetitively the same database.

What is the cause(s) of the error message?
Why did the database apparently run fine if I ignored the error?