Unable to add an APP to the SharePoint site and getting error message “Sorry, there was something wrong with the download. Try adding it again”.

Consider the following scenario:

• You have installed the Web Analytic Integration app from the SharePoint store.
• When you click on the app from within Site Contents, or view the AnalyticsIntegration.aspx page for the app, the page is not properly displayed and the description fields are blank as seen in the screenshot below.

Workaround:

To work around this issue, you must remove the app, change the Locale setting for the affected site to English (United States), and then add the app again.

Note: The Locale setting may affect the way your site displays certain information such as numbers, dates, and time.

1. Browse to the Site Contents page for the SharePoint Online site. To reach this page, click the gear icon for the Settings menu and then click Site contents.
2. Rest the mouse over the Web Analytic Integration app, click the ellipses (…), click the second ellipses, and then click Remove.

Note: If you have any data entered in to the fields for the app, you may want to copy and save this data prior to removal of the app.

3. Click OK on the Message from webpage dialog.
4. Click the gear icon again for Settings and then click Site settings.
5. In the Site Administration section, click Regional settings.
6. In the Region section, set the Locale setting to English (United States) and then click OK at the bottom of the page.
7. Add the Web Analytic Integration app to the site again.

More Information:

This issue occurs when the Locale setting for the SharePoint Online site is set to anything other than English (United States).