hey out there,

finding a lot of forum traffic revolving around what we're experiencing but no real solutions!

we've uploaded a vanilla umbraco 7.3.0 installation to a production server (windows server 2012 r2 iis 6.2). when we hit umbraco, we get this in the console:

ReferenceError: UmbClientMgr is not defined

looking to the code, it's where the 'DependencyHandler.axd is hit e.g.

DependencyHandler.axd?s=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&t=Javascript&cdv=826672144

which is saying to me the client dependency isn't working.

this has to be environment specific as the same code works fine locally, on a qa and uat server.

so the question is: is there a setting or something we're missing on the server or in iis that would allow the client dependency to kick in or would stop it working? we can't see anything in the log or the windows event viewer that would point to what the issue is...

running the site with debug="true" isn't an option!

cheers,

jake