Can't read json file via Amazon Athena

Question

Trying to test out Athena on a sample JSON file (~90MB). I've put the file in the S3, and tried the following:

• Used Amazon Glue to crawl the folder in which the JSON file sits. Everything seemed to work in order, but when I tried to query on Athena, I got "Internal Error"
• After some research, I figured that this is probably due to incorrect schema detection, so removed all the fields except 1; this time the query ran, but the results were all empty
• Tried creating the table through the manual option in Athena, again focusing on getting just 1 column to work - same empty results
• Tried running a manual DDL statement to create the table - same empty results
• Tried playing with the encryption setting - same empty results

My JSON file is newline delimited (e.g. each new line is a single JSON object) - that's how I understood it should work.

Has anyone experienced similar issues and found a solution?