An update to this post, based on further investigation. 

My original method was to pre-translate all files in one go as an array of ProjectFiles using this code:

ProjectFile[] targetFiles = project.GetTargetLanguageFiles(targetLanguage);
AutomaticTask translateTask = project.RunAutomaticTask(
targetFiles.GetIds(),
AutomaticTaskTemplateIds.PreTranslateFiles);

I managed to find more info on the "random" error I was getting...

     [exec] Unexpected exception when configuring file multiFileConverter for task 'Pre-translate Files': Failed to create an instance of translation provider 'sdltm.file:///C:/TRADOS/Translation Memories/20191296PEGA_EL_Help_delivery_20200203.sdltm'..


When I changed the above code to iterating the array of ProjectFiles and performing a pre-translate on each file separately, it seems to have fixed the pre-translate failures.
In the current run, it's successfully processed the first 56 projects, so is looking promising.
Regards
Mark

Hi Mark Owens

I have the same issue as you describe.

I'll definitely try the by-file method and keep my fingers crossed.

Samuel 

Hi Samuel,

This method has proven rock solid for me since my post. I hope it does for you!

Cheers

Mark

Would you mind sharing your snippet that iterates through the ProjectFiles array?

Hi Samuel,

Sure here's what I'm using to do the Pre-Translate You could use a similar approach for the Analysis side too I reckon:

        public bool PreTranslateIndividualTargetLanguageFiles(FileBasedProject project, string locale)
        {
            #region "Pretranslate"
            Console.WriteLine("Pre-translate start");
            List<TaskStatusEventArgs> taskStatusEventArgsList = new List<TaskStatusEventArgs>();
            List<MessageEventArgs> messageEventArgsList = new List<MessageEventArgs>();

            Language targetLanguage = new Language(CultureInfo.GetCultureInfo(locale));

            ProjectFile[] targetFiles = project.GetTargetLanguageFiles(targetLanguage);
            Console.WriteLine("Pre-translating " + targetFiles.Count() + " files");
            for (int i = 0; i < targetFiles.Length; i++)
            {
                if (targetFiles[i].Role == FileRole.Translatable)
                {
                    Guid[] fileId = { targetFiles[i].Id };
                    AutomaticTask translateTask = project.RunAutomaticTask(
                        fileId,
                        AutomaticTaskTemplateIds.PreTranslateFiles);
                    CheckEvents(taskStatusEventArgsList, messageEventArgsList);
                    if (translateTask.Status.ToString() != "Completed")
                    {
                        Console.WriteLine("\t" + fileId.ToString() +  "\tPre-translate " + translateTask.Status.ToString());
                        ExecutionMessage[] errors = translateTask.Messages;
                        foreach (ExecutionMessage error in errors)
                        {
                            Console.WriteLine(error.Message);
                        }
                        return false;
                    }
                    //else
                    //    Console.WriteLine("Pre-translate " + translateTask.Status.ToString());
                }
            }

            return true;
            #endregion
        }

I hope that formats properly!
Cheers

Mark

Hi Mark Owens

Thanks for that, I'll give it a whirl and monitor it.

Cheers

Samuel