It happens when AJAX is enabled, because inline styles get lost. The issue has been reported as a bug:

http://support.dotnetnuke.com/issue/ViewIssue.aspx?id=6720&PROJID=2

This is the issue: When AJAX is enabled, the inline styles used by the event viewer get lost after screen updates. If you disable AJAX, it will work.

I posted a fix to this. If you're interested, you can download it here: http://support.dotnetnuke.com/issue/FileDownload.aspx?FID=73. It's a ZIP with three files:

• logviewer.ascx 
• logviewer.ascx.vb
• logviewer.css

They need to be copied over the admin/logviewer folder in the root of your DNN installation. Please do this carefully, maybe on a test system first. I believe it's a robust fix, and I'm using it in production, but you shouldn't just take my word for it :-).

If you don't want to try my fix, you can diable AJAX in the Host Settings.

-Andrew

---

Andrew M. Galbraith Ryer

There is nothing like looking, if you want to find something. You certainly usually find something, if you look, but it is not always quite the something you were after.
     -J.R.R. Tolkein