Hi, thanks for posting.
Unfortunately, this bug is actually in the O/S. I think it's been caused by a recent Windows update. See here for details:
https://forum.ncrunch.net/yaf_postst3273_Extract-Full-HTML-Result-Save-Issue.aspx.
There isn't much we can realistically do to solve this at the moment on the side of NCrunch. If MS don't solve the problem, we will eventually need to implement a workaround ... but I have a feeling this will be fixed soon. Note that NCrunch's config files are all in XML, so you can hand-edit them if you need to. An example .ncrunchsolution file with additional files to include is shown below:
<SolutionConfiguration>
<Settings>
<AdditionalFilesToIncludeForSolution>
<Value>..\UnitTest\**.*</Value>
</AdditionalFilesToIncludeForSolution>
<AllowParallelTestExecution>False</AllowParallelTestExecution>
<SolutionConfigured>True</SolutionConfigured>
</Settings>
</SolutionConfiguration>
And for the project-level config setting:
<ProjectConfiguration>
<Settings>
<AdditionalFilesToIncludeForProject>
<Value>..\UnitTest\**.*</Value>
</AdditionalFilesToIncludeForProject>
<CopyReferencedAssembliesToWorkspace>True</CopyReferencedAssembliesToWorkspace>
</Settings>
</ProjectConfiguration>