VB6 not recognizing ADODB enumerators via COM

I am supporting a legacy ASP page which creates an ADODB stream object like this, then attempts to set it's type with an ADODB enumerator.

Set BinaryStream = Server.CreateObject("ADODB.Stream")
BinaryStream.Type = adTypeBinary

Whenever I run this I get the following error:

Variable is undefined: 'adTypeBinary'

However, if I explicitly name my enumerator, like this, it works

 BinaryStream.Type = ADODB.StreamTypeEnum.adTypeBinary

This is running on several instances of servers, which are theoretically all in sync in terms of configuration and files and such. Th开发者_如何学Cis works on all the servers except one, and I'm not sure what we did to have this start happening. I can confirm this is happening to at least one other library we use. What is going on here? Thanks!

---

AFAIK outside of an external include that defines those values, the only way that you can use unqualified members like that is to define a typelib reference in your global.asa:

<!--METADATA TYPE="typelib" 
NAME="Microsoft ActiveX Data Objects 2.8 Library" 
UUID="{2A75196C-D9EB-4129-B803-931327F72D5C}" 
VERSION="2.8"-->