Active Report not working when run using Cognosisapi.dll

[cwillard]

We just deployed an active report to our production server and are getting a JSON error message when we try to run the report.  We have set a MIME type, per the direction from IBM, for JSON.  We have found if we access Cognos using the URL ending with Cognos.cgi the active report runs correctly.  When we access Cognos using cognosisapi.dll at the end of the URL the report starts to load then returns the error message "Error parsing JSON from file '/cv10pub/cgi-bin/cognosisapi.dll/repository/sid/cm/oid/i48922A2C0D534D5EA5C58335054A4BE1/content/mht/dataStores/ds1.json': Unexpected end of JSON input."  followed by "Unexpected SyntaxError: Unexpected end of JSON input".  Has anybody experience this type oif issue and if so did you find a solution to it?  This is for Cognos 10.2.2.