kongregate black screen for some players

Link to .capx file (required!):

dropbox.com/s/exqriidnk6c8jvv/army.capx

Steps to reproduce:

I have uploaded the game to kongregate using html5 with zipped files from this guide scirra.com/tutorials/639/how-to-upload-and-host-your-game-on-kongregate and around 25% of players are complaining about black or grey screens on various browsers

The game on kongregate is named 'idle invasion' and any help would be appreciated.

So it's working for 75% of people, which would imply there is no bug in C2, so why post here?

What is really needed is to determine what OS. browsers, GPUs the 25% are trying this on. It's more than likely that they have the problem, such as poor browser, bad GPU drivers, wrong OS, old system, etc.

So why post here...to get the answer you just gave me about hardware/software i guess, thanks for the help......but interestingly all the people complaining have achievements from other games on kongregate that they have played successfully.......

Can you link to the game you've uploaded and report any errors you get in the browser error console when it doesn't work? This is likely because you uploaded your game wrong rather than a bug in Construct 2.

Actually it seems to have been due to hosting on dropbox and not getting enough bandwidth for multiple players, changed host and it seems fine now, thanks anyways