Can't upload photos to a newly created bundle

Hi line-of-action team,

I have a problem very similar to this post: https://line-of-action.com/forums/topic/unable-to-upload-photos-for-a-photo-bundle

I created a new animal photo bundle and on the page where you can select your photo options, first of all I cannot select the orientation of the body. Whenever I try a message appears, stating "file field is required." 

And secondly when I try to upload the photos, I can see the loading bar but after that a small pop up message saying "server error" appears. My photos are .jpg at 72 dpi and bigger than 2000 px. I tested with Firefox and Chrome and different image sizes. Nothing worked. 

Can you help me?

I'm sorry it took me some days to respond to this, I have been absolutely slammed with work. I think I may FINALLY have figured this out. Please let me know if it's working better for you.