That you providing all the details. It is a mystery, because everything looks as it should (in the installation logs, in the logs, and in the registry); also, the error from VBScript is the same as from Delphi, so it is clear that the problem relates to COM API of QuickOPC in general.

From the error message, it seems that while all our "normal" files are in place, some internal dependency is missing. We are doing some "tricks" internally to reduce the number of dependencies that need to be installed, and there is a possibility that this somehow failed.

Can you please try to:

1. Install this on the computer: www.microsoft.com/en-us/download/details.aspx?id=53840 .

2. Re-run the Steup, choose a custom installation, select "full" install type, and, just to be absolutely sure, verify that "Embedded assemblies" is checked in the list of installation components.

BTW, have you tried the same on some other computer?

Regards

What do you lead to think that "the installation was not finished properly"? Was there some error message, - or is just the fact that things don't work as expected?

Anyway, have a look at the installer log file, and/or post it here. Instructions: opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...bleshooting%20the%20Setup.html .

Second, use command line to change the current directory to the installation directory of QuickOPC, do "dir /s >dir.txt", and post the resulting "dir.txt" file here.

Third, use REGEDIT to check if you have the following registry key:

HKEY_CLASSES_ROOT\CLSID\{6B0B5307-BCB6-4953-A832-BFCF952F7561}

and if so, right-click on it, do "Export", and post the resulting file here.

Fourth, in the installation directory of QuickOPC, switch to the following directory:

ExamplesCom\VBScript\WSH\DOcExamples\_EasyDAClient

and type

CScript ReadItem.Main.vbs

Does it work (do you get a value/quality/timestamp), or do you get an error message (if so, what is the message?).

Thank you
Best regards

OK, this isn't really a connection problem in the sense of connection from the OPC client to the OPC server, but rather a problem in instantiating the QuickOPC component.

I assume this is with the current version (2018.2).

Have you installed QuickOPC with COM development enabled? This is a choice on the 2nd page of the Setup wizard. If not, or if you are not sure, please re-run the Setup and make the proper choice.

Best regards

Hello,
we are no Delphi expert here, but we will do our best to help you with this.

In general, both the approaches you have mentioned (using the old version with Delphi 2010, or using the current version) should work. But we provide no support for that old version, so the focus should be on the solution with the current version.

Either way, please follow the posting rules described here: www.opclabs.com/forum/announcements12/2365-rules-for-forum-posts . Your description is not detailed enough. Specifically, describe what you man by "has ... problem with connection".

Best regards