Hey Jeff,
Would this be similar to your submission method?
What I think is happening is these files are not getting path mapped. Which we do not have support for at this time.
Here are a couple alternatives you could try to get around this:
#1 - See if you are able to change the cache files to be relative to the scene file so that when the files are collected the AWS scene path is used to reference those files. Example $(scene_dir).
#2 - Generate the simulation on AWS using Submit Phoenix FD Simulation To Deadline. This should generate all the paths on AWS making them accessible to the AWS Slaves. Notice in the screenshot below you can reference output to be relative to the scene directory:
Hopefully one of those solutions can work. Let me know how it goes!
Regards,
Charles