http://forums.devart.com/viewtopic.php?p=56813&sid=34dd87f8b99b26194b8e8a42c91ec595#p56813 The problem is that you have different versions of sources and ODAC components.

Try to do the following:
- remove all sources from disk
- uninstall ODAC components
- check that all libraries, packagesб and sources were removed
-> find all files by mask “*dac*.bpl”, “*dac*.dcp”, “*dac*.rsm” in the folder where Delphi is installed and remove these files
-> find all files by mask “*dac*.bpl”, “*dac*.dcp”, “*dac*.rsm” in the Delphi BPL output directory and remove these files
-> find all files by mask “*dac*.bpl”, “*dac*.dcp”, “*dac*.rsm” in the Delphi DCP output directory and remove these files
- install ODAC again

Now try to compile and run your application again in the direct mode.

If you application is compiled and run successfully then you should download the sources of the same version as you ODAC components are.