this is not necessarily a metaflow question so feel free to ignore/delete/etc. but i'm having lots of trouble deploying some updated userdata (for an EC2 launch template) via CFN. I keep getting a message saying my compute environment is invalid:

"status": "INVALID",
  "statusReason": "CLIENT_ERROR - Launch Template UserData is not MIME multipart format",

the kicker is, if I put my old userdata back in, the one that worked last time i deployed, i get that same error. i can also take lightly modified data from this aws doc, base64 encode it, and put it into the yaml, and run into the same error. anybody else experiencing this? or have pointers?