Error Dynamic Cast DriverLoader.TCRDynalinkDriverLoader

[JMD]

Hello,
I have BDS2009 with all the upgrades.
In the IDE when I try to test the connection on an ORACLE database using DEVARTORACLE I have an error.

The message is :

Can't do a dynamic cast of type 'Devart.DbxOda.DriverLoader.TCRDynalinkDriverLoader' into type 'Borland.Data.TDBXDriverLoader

In the assembly the DLL
Borland.Data.AdoDbxClient version is 11.0.5000.0
Devart.DbxOda.DriverLoader version is 1.0.0.5001
I have added the directory C:\Program Files\Devart\dbxoda in the PATH

How can I solve this error ?