Error: Buffered memory access not supported

error: Buffered memory access not supported. Maybe it isn’t a butterfly/AVR109 but an AVR 910 device?

Every time I compile any program it takes about 3 minutes to then give me the above error message. I have tried switching every COM and every programmer. Nothing works. Has anyone experienced this error?

There are a lot of potential things this could mean, so I’ll need some more info.
1.) Did you make sure to follow the upload guide, selecting both board and serial port?
(programmer doesn’t matter, it doesn’t use any of those programmers)
2.) Is this a windows machine? If so, have you used the latest installer? (it could be a driver issue)
3.) How are you uploading? Are you pressing the upload button or something else?