It looks like what is suggested before, an html/css syntax error or a javascript (widget) issue.
The best way to identify what is wrong is using your browsers development tools. You can use the chrome dev tools, or if you are using Firefox you can use the firebug plugin.
If you press F12, the dev tools show up. And if you would open the network tab or console tab you should see an error somewhere:
If you have errors like this it is most likely related to widgets. In my screenshot the error occurs in mxui.js (internal mendix code). That can only happen when switching between different Mendix versions. If you would empty your cache, and reload it should solve your problem. (CTRL+F5, works sometimes as well)
If you have different errors you don't understand, please post a screenshot of the dev tool here and we should be able to help you out.
Did you try to remove or change the theme back to standard from your model settings?
Regards,
Ronald
Syntax error in css?
Running in IE ? Clear Browser If you do not have a theme active? Get one of the Bootstraps If you use login form or login button? make sure you get the right one from appstore make sure you got the right Java!
Thanks for the replies.
I do have a theme active according to the settings.
The console gave me this:
Also. the MODELER console gave me these errors in the the MODELER console:
(2014-08-27 16:28:14.713 Connector 404 - file not found for file: mxclientsystem/mendix/ui/mendix.css )
(2014-08-27 16:28:15.315 Connector 404 - file not found for file: mxclientsystem/dojox/main.js )
I have no idea how to fix this.
Also. tje MODELER console gave me these errors in the the MODELER console:
(2014-08-27 16:28:14.713 Connector 404 - file not found for file: mxclientsystem/mendix/ui/mendix.css )
(2014-08-27 16:28:15.315 Connector 404 - file not found for file: mxclientsystem/dojox/main.js )