Hi,
You need to activate the OData service used in each application.
Please check the log again in /IWFND/ERROR_LOG and activate the service in the same way as you activated the InterOp Services.
For example: MyOpportunity App, check documentation: http://help.sap.com/fiori_bs2013/helpdata/en/07/a04e52b439077de10000000a445394/content.htm?frameset=/en/01/854e529672097de10000000a445394/frameset.htm¤t_toc=/en/f3/3b3252d40a6401e10000000a441470/plain.htm&node_id=26
Please check documentation available in help.sap.com to check the implementation details for each application.
Thanks,
Vinod