While I am working on a IMT project, I must use a docx, not a doc, because the doc file will failed for its <field> tag.
It will give a message: Object reference not set to an instance of an object, and the whole file would not be worked out.
I think it is not usual. I never encounter this before studio 2011. But in 2014 and 2015 this happened. Would you please help us to find the way work it out(not to save it as docx)? We will appreciate it a lot.