I have been using Draftsight on my Mac for a couple of years with basically no problems but recently I reopened a file I had just worked on , made a change and when I saved it came up with a "this is a read only file"  I could not save the changes. I hadn't made anything to cause this.

I tried loading another file to have the same thing happen.

I reinstalled Draftsight and when I opened up the original file I had a problem with was when I noticed the top menu bar was not there. I was able to at least save now, no read/write prompt.

How do you reinstate the menu bar please.