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Could not load file or assembly...

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support
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29 Mar 2021 12:45 #9579 by support

Replied by support on topic Could not load file or assembly...

Hello.

First, please check that the assembly specified in the exception message is actually present on the disk, together with the other assemblies of your application. I understand that you *are* referencing it; but there are sometimes issues with Visual Studio not copying the assembly to the output folder, or similar problems.

If the assembly file is present where it should be: The next thing to consider is the reason mentioned in the exception message, i.e. missing C++ redistributable libraries. Normally QuickOPC uses a special technique so that no such prerequisite needs to be installed, but it may fail under special circumstances. (opclabs.doc-that.com/files/onlinedocs/QuickOpc/Latest/User%2...ml#Prerequisites%20Boxing.html )

The link to the proper version of the C++ redistributables (warning - there are many version of them!) is installed with the product, specific to the version you are using (question: which version are you using?). For the current version (2021.1) and some versions below, the link is support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads .

Best regards

The following user(s) said Thank You: Ai2Infinity

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Ai2Infinity
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29 Mar 2021 10:20 #9578 by Ai2Infinity

Could not load file or assembly... was created by Ai2Infinity

Good morning,

I have an issue with when writing to tags from an asp.net web page after deployment. It runs fine on my local machine in source code. For context, I have a .net application running on the deployed machine and it runs fine. It is just the ASP.Net Web Page that is the issue. I have installed the OPCLabs redistributable package on the remote machine.

I have attached screen shot of error and current reference list in ASP.Net project.

Thank you for your help.
Craig