When running NetAnalysis, you get the following message:
Error 3170 Couldnt find installable ISAM
This error has been caused by another application installing the following DLL language libraries which stop Microsoft Data Access Objects (DAO) from working correctly on French, German, Italian and Spanish versions of Windows Vista, 7 and 8.
Please install the appropriate language version of Visual Studio 6, service pack 6 to rectify the problem:
PDF Creator is known to install these files. If you have installed PDF Creator, please remove it if you wish to use NetAnalysis. PDF Creator causes the issue described above. For further information about the issues caused by PDF Creator, please see the following: Using NetAnalysis with PDFCreator