I'm afraid I can hold out little hope.
Be very careful using flashdrives.

• Do not manipulate any document on them from within Word.
• Do not save a document to a flashdrive from within Word.
• Do not print a document on a flashdrive from within Word or using Word.
• Do not open a document on a flashdrive from within Word or using Word.

Doing any of these — from within Word — can (will) cause document corruption.

Instead, use the flashdrive to transport documents but do any work on them with a copy on your hard disk drive.