Once WAB App is downloaded and deployed it gives error

SimonFisher — Tue, 28 Apr 2015 17:49:30 GMT

One of my WAB Apps gives the following error once I download and deploy it.

"The system encountered a problem and cannot complete the requested action. Details related to this error have been logged. If the problem persists, please contact your administrator.

Time: Tue Apr 28 13:40:51 EDT 2015"

It works fine when hitting the app directly in WAB developer. Some of my other Wab Apps work just fine, so it must be something specific about this one, but the error is generic and not very helpful. There is no extra debug info in the browser debugger, just that its a 500 error.

I seem to recall this error message possibly coming from a map proxy or ArcGIS Online when doing some other development, but I can't recall exactly. Could this be some issue with AGSOL authentication? I don't get the popup to authenticate, it just goes straight to this error whereas my other WAB Apps ask for the AGSOL authentication and then proceed fine. I just can't see what's different about this app.

Any info or ideas would be greatly appreciated.

Thanks

Simon

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Once WAB App is downloaded and deployed it gives error