I just updated to the current 2.6 development version of March 8th 2015, and all of my solders' equipment is too heavy for them to carry. When they entered their first mission today they could move about and fire, but looking through their inventory screen had their weight level listed as 3000/22. As soon as I dropped their equipment I was unable to pick it up, even during the mission or back at the base. I apologize if you already know this issue.