FeatureLayer points disappear from map, or fail to appear until zoom

[LeeBrannon]

I have a web application that uses a FeatureLayer from my ArcGIS Server.  This FeatureLayer is supposed to display its point features all the time no matter what, but the features frequently disappear (or fail to appear at the start) and I cannot figure out why.  The disappearing happens when I zoom in or out or when I pan, and sometimes it is all the features and other times it is just the features in a particular geographic area that disappear. 

When the features fail to display, I get the error message below in Firebug.

dojo.io.script error Error: Unable to complete operation.  The resource from this URL is not text: http://js.arcgis.com/3.8/

Here is the link to the application:  http://mcmap.montrosecounty.net/mcmap_testing/HHS_estab_testing.html...all the application's code is in the single html file.

Any help on figuring out how to get the points to display all the time would be much appreciated.

Lee

[BenFousek · Accepted solution]

It's the AGS 10.1 SP1 query bug.

Upgrade server installation. Or publish as a FeatureService.

[LeeBrannon]

Thanks for the info...very glad I now know what was causing the bad behavior. 

We don't have an enterprise gdb setup here, so it appears my only option is to upgrade to 10.2.

Lee

[BenFousek]

You're welcome.