Simple. If you are having this problem, post your console.log here.
1: open steam library
2: right click on blockland
3: properties
4: view local game content (far right tab, I think)
5: either post the console.log file here (attached via additional options (if you do the following:
1A: open additional options...
2B: click choose file
3C: drag the console.log from the finder window you got after step 4 into the box that opened from 2B
you should be able to just post the thing without any trouble))
6: or upload to mediafire, mega, filedropper, or some other not-bullstuff file sharing website.
if you are running OS X 10.9 and are not having this issue, please just drop a post here. no need to post your console.log.