Model compiler fails due to invalid DateTime format

[vepes]

We are experiencing a problem with Model Compiler. When attempting to run Opc.Ua.ModelCompiler.exe compile or compile-nodesets command, the compiler stops and outputs an error: "[FormatException] String '' was not recognized as a valid DateTime."

The problem seems to happen in ValidateModel function in ModelDesignValidator.cs file. More accurately the line: DateTime? pd = (ns.PublicationDate != null) ? DateTime.Parse(ns.PublicationDate, null, DateTimeStyles.None) : null; fails to convert the DateTime.

When running in debugger, the ns.PublicationDate is shown in following format, which apparently is not valid UTC time format.

The problem is somehow related to executing environment, because on some of our laptops the Model Compiler is working fine.

[opcfoundation-org]

https://en.wikipedia.org/wiki/ISO_8601 uses : not .
The time value IS invalid.
Not sure why it works sometimes.

[opcfoundation-org]

Discovered that the function was localized when it should not be.
The date has . instead of :.

Fix will be added:

var dt = DateTime.Parse(ModelPublicationDate, CultureInfo.InvariantCulture, DateTimeStyles.None);