| Cause | Explanation | Example | |-------|-------------|---------| | | Windows has a default path limit of 260 characters ( MAX_PATH ). Inventor inherits this limit. | C:\Projects\ClientA\2025\Assembly\SubFolder\Part_Revision5_Final_v2.ipt | | Invalid characters in path/filename | Certain characters break Inventor’s argument parsing. | Spaces, brackets [ ] , carets ^ , ampersands & , non-English symbols. | | Cloud/network synchronization conflicts | OneDrive, Dropbox, or network drives lock files or append status indicators to filenames. | File appears as "drawing.idw - Copy.ipt" or is in "OneDrive - CompanyName" . | | Corrupted user cache | Old design data or temporary files cause invalid arguments during save/export. | %localappdata%\Autodesk\Inventor 2022\Design Data\ contains corrupt Unicode metadata. |