Unhandled exception in InteropRuntimeImplementer.TessApiSignaturesInstance on Windows Server 2019 with Tesseract 4/4.1

Hi Charles,

For couple of days I’m trying to find out why I’m getting the unhandled exeception when calling tesseract using your wrapper (a couple of months I compiled and created nuget from your branch 321-tesseract-4 or the current develop 4.1.0-beta1) on Windows Server 2019 in my application compiled using x86 platform.

On my developper Windows 10 machine I have no issue. On server the MVCPP 2015-2019 are installed for x86 and x64.

I can reproduce the problem using your console sample application (and targeting net 4.7.2 for example [<TargetFrameworks>net45;net472;netcoreapp3.0</TargetFrameworks>] and using Any CPU or x86 platform): Exception non gérée : System.Runtime.InteropServices.SEHException: Un composant externe a levé une exception. à InteropRuntimeImplementer.TessApiSignaturesInstance.TessApiSignaturesImplementation.BaseApiRecognize(HandleRef handle, HandleRef monitor) à Tesseract.Page.Recognize() à Tesseract.Page.GetText() à Tesseract.ConsoleDemo.Program.Main(String[] args) dans C:\Users\ak\OneDrive\Dev\GitHub\tesseract-samples\src\Tesseract.ConsoleDemo\Program.cs:ligne 24

Remote debugging shows the following error:

Do you have any ideas what is causing it?

[charlesw]

FYI I’ve just released a new version 4.1.1 with the dlls built with AVX support disabled which should resolve theses issues. Sorry for the delay and thanks again @Soruk for identifying and sorting out this issue 😃

[Soruk]

No, it is not necessary to build nuget. I updated the DLLs and references to it and make some changes in order to build package (with Visual Studio 2019 there is an option on contextual menu to generate package)