Can't convert to Translatable Format

 Hi,

I have tried to convert Word 2003 - *.doc and PowerPoint 2003 - *.ppt files to translatable format using the following:

Dim _convertFiles As AutomaticTask = _project.RunAutomaticTask(_sourceFiles.GetIds(), AutomaticTaskTemplateIds.ConvertToTranslatableFormat)

and the conversion fails with the following:

Status = Failed {5}

Messages =
  Level Error {2}
  Message "Attempted to read or write protected memory. This is often an indication that other memory is corrupt."

Other formats convert without issues.

Are there any pre-processing or settings required for *.doc and *.ppt?

Thanks in advance.