ICS: Cannot Activate Integration

So I recently used Oracle's Integration Cloud Service, and I couldn't activate an integration. It said:

com.bea.wli.sb.transports.TransportException: Failed to create JCABindingReference for wsdl: servicebus:/MYINTGR_01/Resources/resources/application_24/inbound_25/resourcegroup_26/invoke1_REQUEST.wsdl, operation: invoke1_REQUEST, exception: BINDING.JCA-12600
Generic error.
JCA binding runtime error.
Cause: {0}.

Turned out, the Connectivity (or On-Premise) Agent on the on-premise DB crashed and the ICS couldn't fetch metadata for creating the web service.

Contact your admin to restart the agent.

JDeveloper: Build Does Not Find File That Dont Even Exist

Your build fails, as JDev cannot copy a file that does not even exist? The JDeveloper's IDE Performance Cache is playing you.

Simple solution:

1. Exit JDeveloper
2. Delete the .data folder inside your app folder.
3. Profit!

If it's not there, see the source for detailed info.

Source (Thanks, Andrejus!)