The only photo I can attach to an activity is the last one in my gallery.

Still the same problem.

I have the same issue. I am adding myself to this tread to check on the solution. Hopefully it can be fixed soon! 

I have the same Problem,help !!!

When can we expect the fix to be released?

Here is a simple idea....why not remove the last update and restore the previous version that worked perfectly then find the problem in the update and release that version at a later date when it is fixed 

Heres a simple idea. Restore the old version that did work. Fix the problem with the new update and then release this st a later date.

I have same problem. It takes always first photo, no matter whitch photo I select (I have latest photo first in list).
Workaround for this is select many photos, for example, if I want 5th photo from list, I must select 5 photos, no matter whitch one, then Connect adds photos 1-5. After that I remove wrong photos. Extra job but I can do it. Hopefully we get bug fix for this soon!

I got the same bug. My (sad) workaround: I upload 10 fotos and the discard the ones I don't want. 

but that only works if the ones you want are in the 10 latest photos...