Debugger entered--Lisp error: (error "Stack overflow in regexp matcher")

  re-search-forward("^\\*+ .*\\(?:\\[\\([0-9]+\\)%\\|\\([0-9]+\\)/\\([0-9]+\\)\\]\\)" nil t)

  org-refresh-stats-properties()

  org-agenda-prepare-buffers(("/Users/kev/Dropbox (Personal)/org/2017_resolutions.org" "/Users/kev/Dropbox (Personal)/org/gcal.org" "/Users/kev/Dropbox (Personal)/org/mobile-inbox.org" "/Users/kev/Dropbox (Personal)/org/personal.org" "/Users/kev/Dropbox (Personal)/org/plebland.org" "/Users/kev/Dropbox (Personal)/org/proposal.org" "/Users/kev/Dropbox (Personal)/org/read.org" "/Users/kev/Dropbox (Personal)/org/recipies.org" "/Users/kev/Dropbox (Personal)/org/reduxderiveddata.org" "~/Dropbox (Personal)/org/gcal.org"))

  org-agenda-prepare("Day/Week")

  org-agenda-list(nil)

  funcall-interactively(org-agenda-list nil)

  call-interactively(org-agenda-list)

  org-agenda(nil)

  funcall-interactively(org-agenda nil)

  call-interactively(org-agenda nil nil)

  command-execute(org-agenda)

#+END_SRC

I suspected this was because I create a daily org file and have the dailies in a wild card for ~org-agenda-files~ I have removed about ~300 files from ~org-agenda-files~ and it did not alleviate the issue. 

The stacktrace above is without the daliy files