Tim,
This is the ADS function that is bringing those problems:
AdsCreateIndex90 @508 ; AdsCreateIndex90
so if you get an older ace32.dll, we can generate its ace32.lib that should not include any reference to AdsCreateIndex90.
Simply open ace32.dll with UEStudio and look for such name. If it is not inside it, then it is a valid ace32.dll for you