FYI, My site got hacked last week. It was being used to send spam email seriously. Lots of weird files got injected into the folder.
I am not sure if this is caused by this plugin.
But I have the cron job to run every 5 minutes. That’s how the first preload get start.
I need to click preload cache now
Then wait for the cron job to start
So that the preload will actually start
You are right. I overlooked this. This comes from the AutOptimize plugin. I have unchecked the image options there. Now it’s working.
I am having this issue with firefox only. Working fine in Chrome and IE.
