recently had a problem myself and discovered my firewall software (eset) was stopping it for some reason switched it off and it worked fine.
For some reason i am unable to upload images to forum posts via firefox,chrome is ok
That's good to know. I just installed ESET a week or so ago so I'll keep watch and see if it affects my uploads with Chrome.
Can this outfit (eset) be trusted?
Vulnerability in ESET NOD32 Licence Activation system generates unlimited usernames and passwords for free