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Error: Maps and Apps Gallery 10.1.1 does not display its gallery

Error Message

Maps and Apps Gallery 10.1.1 does not display its gallery if a gallery item does not have an icon, and the new ArcGIS Online content items are not created with any icon.

Cause

The problem is that the new content types do not have a default thumbnail. The Gallery was updated to handle this new ArcGIS Online behavior, and the change has been made available in version 10.2.

Solution or Workaround

To correct this issue, do either or both of the following steps.

  • Make sure that each Gallery item has an icon.
  • If using the 10.1.1 version of the Gallery, modify mapps.html (the modifications are visible in the github repository -- red lines are deleted and green lines are added).