Hi Jesse,
Can you please confirm what kind of implementation it is (JavaScript, Android, IOS)... Is it is mobile and you are using SDK 4.x remember that it can only use ContextData and therefore processing rules needs to be used
Can you send an example of image request please ?
I will be happy to help you but I need more details.
If it is easier for you contact me via Twitter : @AlexisAnalytics
Best regards.
Alexis Cazes