Failed to save target document with error message:"Failed to save target content: Extra '<illustration name="picture"/>' tag within the segment

Dear all

Again I am seeking your help as after translating a long and tricky document, when I try to save it back to Word I get this message. Does anyone have an idea on how to solve it that doesn't envolve creating a new project as the source file was a Word file converted from pdf with lots of tables, whose text was all mixed up between segments?

Thanks for all the help I can get, Mariana