Cannot load X-rays - Status code 400

For the past 12-18 hours or so, I cannot seem to add any radiographs. Spontaneously it will let one sneak through and add it to the patient, but more often the pinwheel goes, followed by a window saying:

Create XRay failed
Could not create the xray: Request failed with status code 400

Can anyone help with troubleshooting this?

Thank you,