Hi, i'm trying to migrate code from delphi xe to delphixe6.

When i compile i get this error in the unit OracleData.

[dcc32 Fatal Error] uBase.pas(26): F2051 Unit OracleVisual was compiled with a different version of FireDAC.Phys.Oracle.DOAHelpFile

Can you help me? ? i'm desperate.

Can you check if your PC contains multiple versions of Oracle*.dcu and/or Oracle*.pas files? Make sure that only the installed Delphi XE6 files are in the Delphi search path.

Thanks Marco, is posible are there a problem with oracle 8 client?

Unit OracleVisual was compiled with a different version of FireDAC.Phys.Oracle.DOAHelpFile

And the compiler stop in oracledata...

Did you perform the check mentioned in my previous post?

The problem is not related to the oracle 8 client.

OracleData.dcu
Oracle.dcu

Are in these paths:

C:\Program Files (x86)\Embarcadero\Studio\14.0\DOA
C:\Program Files (x86)\Embarcadero\Studio\14.0\DOA\Win64

I need a a solution Marco.. can you compile oraclevisual.pas unit with delphi xe 6 upadte 1 and send me it.?

thanks so much

The problem was solved as follows:

1. Exit Delphi XE6.
2. Rename your current <project>.dproj file to <project>.dproj.error.
3. Create a new dummy project with a simple empty form in a different directory and save it.
4. Edit dummy.dproj in Notepad and replace all occurrences of "dummy" with your <project> name.
5. Save the file as <project>.dproj in the original project directory.
6. Restart Delphi XE6 and try to build your project again.

Hi Marco,

I had exactly the same error. Your solution worked like a charm!