Troubleshooting

My request returns a 500.19 error in the DynamicCompressionModule in IIS

You've most likely revealed a bug/error in mapguide-rest, but the response is chunked causing the error message to slip into the response, which is tripping up the DynamicCompressionModule. The underlying error can be revealed by passing the following flag to the request:

chunk=0

This will turn off chunked responses