@tig said:

Yes, make sure that your IE Internet Options settings for Javascript etc are not overly strict...
Can you get other web-dialogs to work OK ?

I wanted to update this - I do not have problems with other dialogs. Infact, this same plugin works fine in my SU13. My work around has been to revert back to my SU13, call up the plugin, import, save, and open in SU14. So I can't imagine the dialog box error coming from IE if the same plugin works through a different version of SU.

@tig said:

Open Internet Explorer > Safety > Delete Browsing History and empty the cache...
SketchUp uses IE for its web-dialogs, irrespective of your default browser.
Sometimes the cache is messed up and needs clearing...
Report back...

That wasn't it. I deleted temp downloads, cookies, history, and tracking protection from IE, no changes. Did the same in Chrome (my default browser) just to be sure. Restarted SU and still have an empty dialog box when I call up the plugin.

SU 14.1.1282
FreeDXF 0.8.2
Win7 Pro

Jim - when I open the plug-in I'm getting this empty dialog box. I tried reinstalling both the plug-in and SU14, no changes. Any suggestions?