Debug web have the same problem but windows one works. Also I've seen that the game is been updated, I was able to mine two block this time but than it crashed.
PS. With the latest ver. I tried starting the game with Windows 7 compatibility and as administrator and it works!
PPS. Also two things I wanted to get rid of some weight and by discarding materials the weight did not drop unless I mine another block and when I run out of stamina I can still continue mining.