Please send it back to me yes, my email address is in my account info.
I was not working from a recovery file. What I did is I opened a pdf (that I am trying to copy into Affinity) and copied element by element into the 'template' document. At a certain moment I focussed on the master page and copied parts in that, including text frames. I bumped into the strange behavior that I was not able to edit the text in the text frame of the master page anymore and then the crashes started. I read about master pages and watched a tutorial. Apparently Affinity recommends to only add guides to the master page, not text frames (I already had wondered how I could learn the master page to flow text to beyond the last page of the master - I actually added such a link to a document page and copied that into the master page). So first I updated to 1.7.0.162 and then I tried to add guides and remove the text frame from the master page, and the next thing that happened was that Publisher crashed whenever I tried to reopen the document.
I hope this helps