[Fractint] SDL Version

My system is Win10_64bit. Due to fundamental problems I have given up using the SDL Version, these are not caused by the MFR Software. Now trying to use DosBox SVN Daum, installed inspite a warning on the net. Problem: Fractint completely fails : on all searches "nofiles" error,  - images, frms, pars and so on also  Not caused by "autoexecute" ! All known versions of sstools tested, inside or outside the Fractint folder, manual  reso calling does not help. Maybe it´s a problem of user rights or lack of 16bit support after latest "upgrade". Any help welcome, Albrecht