The following error message appears in Zend Server for IBMi when using the Zend Studio Diagnostics that are available from the Overview | Events | Event Details page:
"Failed to communicate with Zend Studio. Go to the online help's 'troubleshoot' section to find out how to fix the connection"
This error message can be caused by several possible problems:
When running diagnostics on an alternate server:
The Zend Debugger is not running on the alternate 
	 server.
Solution - Make sure that the Zend Debugger is running and available 
	 on the alternate server. In the UI, go to Configurations 
	  | Components, and check that the Zend Debugger is loaded.
The connection parameters in for the Zend Monitor component on the Configurations | Components   pageare not the same as the settings in Zend Studio's 
	 Debugger preferences. (IP address, Port and if you are using SSL). 
	 
Solution - Check the settings in Zend Studio for Eclipse. For 
	 instructions go here 
	 and make sure the Zend Studio for Eclipse debug settings are the same 
	 as defined in Zend Server for IBMi 
	 .
The Zend Studio IP address is not allowed to debug 
	 on the alternate server.
Solution - In the UI, go to Configurations 
	  | Components and select the Zend Debugger component from the Components list. Make sure 
	 that the Zend Studio IP address  is an allowed host to debug - the setting should 
	 be in the alternate server's Zend Server for IBMi 
	 UI under Configurations 
	 | Components | Zend Debugger.