Image Trace Error prevously used

trying to use image trace, in the past when i have received the error message i have just changed the threshold a little bit and it will work, now nothing is working and images that i have traced before are not working at all. Only information it gives is Error, no other info. I have restarted my pc, and made sure my system time is correct. extremely frustrating. Any help is greatly appreciated!

what are you trying to trace? can you share your image