All the sudden today I started getting a weird problem when trying to edit files in Eclipse. I could save the file once, but on a subsequent save I was getting the following error:

If I closed the file and re-opened the file, I could save it again but only once.

This had me really scratching my head. My projects actually exist on my LAN as I save the files directly to my personal Dev Server. I thought the problem might have related to some kind of network problem, so I went through a bunch of steps—including rebooting both my Dev Server and my Workstation—but nothing was working.

Finally I got the bright idea to disable ESET Smart Security (which is the new version of the NOD32 scanner.) What do you know, things started working again. I had to play around with things for a while before I was able to figure out what exactly was causing the problem.

It turns out the "Real-time file system protection" was causing the problem. I'm not sure why it's causing the problem, but the fix is easy enough.

1. Open up ESET Smart Security
2. Make sure you're in the Advanced mode layout
3. Go to Setup > Antivirus and antispyware
4. Click the "Configure..." option
5. Click the "Setup..." button
6. Un-check the "Scan all files" option
7. Keep clicking the "OK" button until you're back to the ESET Smart Security window

NOTE:

If you prefer, you could just add the specific extensions you're having problems with to the "Exclude" filter list, the option is up to you.

I'm going to open up a ticket with ESET's support and see what they have to say about this.

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