Vista + D7 + SDAC 3.80.0.38 = Incorrect MDAC Version

[Scoundrel]

Hi Developers.

My application currently developed under Windows XP not works under Vista. The errormessage is "Incorrect MDAC version. Download latest MDAC version".

What is the problem?

SC

[yeohray]

Encountered that too. I upgraded to version 4, and noticed that the check for the MDAC version is not made on Vista systems, thus not raising that error message. No idea what's the reason for that.

[Antaeus]

My application currently developed under Windows XP not works under Vista. The errormessage is "Incorrect MDAC version. Download latest MDAC version".

What is the problem?

This error was fixed in SDAC 3.80.0.32, so it must not appear in SDAC 3.80.0.38. Try to check value of this variable at run-time: SdacVersion. If it equals to '3.80.0.38', run this code in your application, and report us the exact text of the message:

Code: Select all

var
  OSVersionInfo: TOSVersionInfo;
begin
  OSVersionInfo.dwOSVersionInfoSize := SizeOf(TOSVersionInfo);
  Windows.GetVersionEx(OSVersionInfo);
  ShowMessage(IntToStr(OSVersionInfo.dwMajorVersion));
end;

[Antaeus]

Encountered that too. I upgraded to version 4, and noticed that the check for the MDAC version is not made on Vista systems, thus not raising that error message. No idea what's the reason for that.

The reason of the problem is that MDAC version under Windows Vista differs from MDAC version under XP, 2000, etc. So we had to add some code to avoid this problem.

[Scoundrel]

Hi Antaeus,

I checked run-time sdac version. That was 3.5.0.xx. I removed manually all sdac related files, and I reinstalled 3.8.0.38. Now it works.

Thanks for help!

SC

My application currently developed under Windows XP not works under Vista. The errormessage is "Incorrect MDAC version. Download latest MDAC version".

What is the problem?

This error was fixed in SDAC 3.80.0.32, so it must not appear in SDAC 3.80.0.38. Try to check value of this variable at run-time: SdacVersion. If it equals to '3.80.0.38', run this code in your application, and report us the exact text of the message:

Code: Select all

var
  OSVersionInfo: TOSVersionInfo;
begin
  OSVersionInfo.dwOSVersionInfoSize := SizeOf(TOSVersionInfo);
  Windows.GetVersionEx(OSVersionInfo);
  ShowMessage(IntToStr(OSVersionInfo.dwMajorVersion));
end;