Can you ping both ch05na01 and ch02na01 from the Snap Creator server and also telnet to 443 on both?
All the snapshot relationships show up under ch05na01 so I see no need for SECONDARY_INTERFACES, I would comment that out. Also there was a bug in MANAGEMENT_INTERFACES in 3.4 so I would also make sure that is commented out.
Ok a couple more questions are you using the MSSQL plugin? So is Snap Creator running SnapManager? If so what happens when you uncomment APP_NAME? So basically just run normal Snap Creator without any SnapManager?
What is Storage-LAG-302? I dont see it in snapvault, so it looks like you are using snapvault on the default interfaces, is this correct?
Another thing you can try is the latest SC code which is 3.4p2:
The error "cannot find storage executor for ch02na01" means SC couldn't connect to storage system which could occur for a lot of reasons, there was a bug with MANAGEMENT_INTERFACES fixed in 3.4p2 which could cause this.