Same here, I have played intensively for several months until this recent problem made it unplayable.
I also noticed something strange, maybe related.
I live in Japan, using the sony xperia zx (English).
Trying to resolve this problem I uninstalled DK, then went back to Google Play to download and reinstall it, to be told by the DK page, with "1 million downloads", that the "app was not available in my country", which is strange because I was playing it from the beginning.
When I went to the page of previously installed apps history in "my apps and games" in Google Play, DK was still in the list. When I clicked on it I now had the install button active, but there was only "500 thousands downloads" displayed. I could install it, the dungeon was how I left it before uninstalling it.
So, it appears there are two versions of the game? One "old" version that may be installed worldwide, and a new updated version but only for North America and/or Europe users? The possibility exists that when I play with the old version and raid a dungeon from the new version, it crashes.
So, here is my question. Where do your guys with the Xperia problem are?