Hello,

One of our customers ran into this issue after upgrading from 2010 to 2013. One of the list views was grouped by our Connected Field, a custom lookup field. In 2013, the view is completely blank, to columns, not data, just a white page.

Turns out it's another one of (numerous) bugs in the view client-side rendering feature in 2013. By simply switching back to server-side rendering mode, you can fix it in a second

1. Click on the gear icon in the top-right corner to open the Site Actions menu
2. Click on Edit Page
3. You can know see the list view web part
4. In the web part context menu, choose Edit Web Part
5. In the toolpane, expand the Miscellaneous section
6. Check Server Render
7. Save settings
8. Click on Stop Editing in the left corner of the ribbon

Voila, the view works again! Just hope it gets fixes in one of the next patches.