Can't export to .jpg all of a sudden!!!!

just happened today. Every time I create some kind of new artwork, I always export it to .jpg before sending it to the customer

for approval..Today it quit working. It goes through the routine, I click on export, pick .jpg, and the export to box comes up, but the file is not created

So I did the F8 reset which of course created a couple of new probs for me such as deleting my custom settings such as making the outline a hairline and now it defaults to .5  but it didnt


Anybody have a solution for me?


And yes I did search all over the computer for the files but they aint there