I had to re-do all of my reports from scratch. Custom visuals now work.
I tried to update the Custom Visuals via PowerBI Desktop with a newer version, but this did not resolve the issue. I had to create a blank report and start again.
Ensure you download the latest version of your custom visual.
I've had this same problem today.
For months I've bene using the custom DialGauge visual and it has been working fine.
But as of tonight every single report that I open in Power BI Desktop that contains it now displays a blank tile where it should be, no data fieldwells or formatting options when the blank tile is selected, and no visualization icon on the right-hand side. This is the same in 7 or 8 reports that have worked for months with this custom visual.
Other custom visualizations in the same reports, such as the Globe Map, all continue to work properly.
It's just the Dial Guage from Power BI's visuals gallery is broken.
If I start a new/blank report and try to import it, Power BI Desktop (the latest public release) says its imported successfully, yet the icon for the visualization is not added to those that are available in the report.
If I download the sample .pbix containing it from the Power BI visual gallery the tile is also blank (and no icon):
Has anybody else experienced this?
I make heavy use of the custom KPI gauge so a qucik solution would be greatly appreciated.
I even moved forward a release of Power BI Desktop in the hope it would solve the problem.
Now all of my Power BI service tiles that were displaying this visualization are blank.