для 11 и 14 макса, reg файл, поправьте сами под 15
работает в win8.1
Windows Registry Editor Version 5.00[HKEY_CLASSES_ROOT\.MAX]@="3dsmax"[HKEY_CLASSES_ROOT\.MAX\PersistentHandler]@="{98de59a0-d175-11cd-a7bd-00006b827d94}"[HKEY_CLASSES_ROOT\SystemFileAssociations\.max]"ExtendedTileInfo"="prop:System.ItemTypeText;System.Size;System.DateModified;System.Author;System.OfflineAvailability""FullDetails"="prop:System.PropGroup.Description;System.Title;System.Subject;System.Keywords;System.Category;System.Comment;System.PropGroup.Origin;System.Author;System.Document.LastAuthor;System.Document.RevisionNumber;System.Document.Version;System.ApplicationName;System.Company;System.Document.Manager;System.Document.DateCreated;System.Document.DateSaved;System.Document.DatePrinted;System.Document.TotalEditingTime;System.PropGroup.Content;System.ContentStatus;System.ContentType;System.Document.PageCount;System.Document.WordCount;System.Document.CharacterCount;System.Document.LineCount;System.Document.ParagraphCount;System.Document.Template;System.Document.Scale;System.Document.LinksDirty;System.Language;System.PropGroup.FileSystem;System.ItemNameDisplay;System.ItemTypeText;System.ItemFolderPathDisplay;System.DateCreated;System.DateModified;System.Size;System.FileAttributes;System.OfflineAvailability;System.OfflineStatus;System.SharedWith;System.FileOwner;System.ComputerName""InfoTip"="prop:System.ItemTypeText;System.Size;System.DateModified;System.Document.PageCount""PerceivedType"="document""PreviewDetails"="prop:*System.DateModified;System.Author;System.Keywords;*System.Size;System.Title;System.Comment;System.Category;*System.Document.PageCount;System.ContentStatus;System.ContentType;*System.OfflineAvailability;*System.OfflineStatus;System.Subject;*System.DateCreated;*System.SharedWith""ThumbnailCutoff"=dword:00000000[HKEY_CLASSES_ROOT\SystemFileAssociations\.max\shellex][HKEY_CLASSES_ROOT\SystemFileAssociations\.max\shellex\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}]@="{9DBD2C50-62AD-11d0-B806-00C04FD706EC}"[HKEY_CLASSES_ROOT\.max\PersistentHandler]@="{98de59a0-d175-11cd-a7bd-00006b827d94}"[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Portable Devices\FormatMap\.max]"Format"="{BA830000-AE6C-4804-98BA-C57B46965FE7}""ContentType"="{680ADF52-950A-4041-9B41-65E393648155}"[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\KindMap]".max"="document"[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\PropertySystem\PropertyHandlers\.max]@="{97e467b4-98c6-4f19-9588-161b7773d6f6}"[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Portable Devices\FormatMap\.max]"Format"="{BA830000-AE6C-4804-98BA-C57B46965FE7}""ContentType"="{680ADF52-950A-4041-9B41-65E393648155}"[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\PropertySystem\PropertyHandlers\.max]@="{97e467b4-98c6-4f19-9588-161b7773d6f6}"[HKEY_CLASSES_ROOT\3dsmax]@="3dsMax scene file"[HKEY_CLASSES_ROOT\3dsmax\Shell][HKEY_CLASSES_ROOT\3dsmax\Shell\Open]@="Open with Autodesk 3ds Max Design 2011 64-bit"[HKEY_CLASSES_ROOT\3dsmax\Shell\Open\Command]@="\"C:\\Program Files\\3dsmax2011_64_Design\\\\3dsmax.exe\" \"%1\""[HKEY_CLASSES_ROOT\3dsmax\DefaultIcon]@="\"C:\\Program Files\\3dsmax2011_64_Design\\\\ui\\Icons\\file_3dsmax_max.ico\""[HKEY_CLASSES_ROOT\3dsmax\Shell\OpenNew]@="Open with Autodesk 3ds Max Design 2014 64-bit"[HKEY_CLASSES_ROOT\3dsmax\Shell\OpenNew\Command]@="\"C:\\Program Files\\Autodesk\\3ds Max Design 2014\\\\3dsmax.exe\" \"%1\""