In an effort to make our APIs more consistent a few of the API files have been moved around with build 858. Your code may need to be updated to reflect these changes.
udb.h, libudb_api.so, udb_api.dll and udb_api.lib have all been moved to bin\<OS>\C
The bin\pc-win64\python folder has been capitalized to bin\<OS>\Python
Custom Perl API
The Understand Perl library files have been moved up a level from bin\<OS>\Perl\STI\Maintain to bin\<OS>\Perl\STI
This will only affect users that are using the perl API with their own custom install of Perl 5.10.0, not those running scripts inside of Understand or using the uperl executable.