Download Number in the admin backend

In this case the number format only sets the thousand separator so this couldn’t case this issue you’re describing. I just tested this with a 4 digit download count and it works fine: https://dl.dropboxusercontent.com/s/7yyry3k2nvoofyz/2015-03-18%20at%2009.06%202x.png?dl=0

You didn’t test this by simply changing the version download count in the database did you?

Hi,
thank you for getting back to me.

with fix applied: https://www.dropbox.com/s/lqzzqjh92hrrgfq/Screenshot%202015-03-18%2010.16.03.png?dl=0
without fix: https://www.dropbox.com/s/0ncitdnbj52ergx/Screenshot%202015-03-18%2010.17.31.png?dl=0

I’m not changing anything in the database, those are my real download numbers. I’m on Version 1.6.3

It looks like for some reason your download counts already include a thousand separator. This might be added by a filter, can test if it still breaks with Download Monitor as the only active plugin?