Hi - I have 3 accounts on my Mac. I'm the administrator. I hope this is right thread. I've started to have problems sending videos by email even though I've had no problem before. The funny thing is I have no problem with the sending videos on the other two accounts. I get Safari can't open the page; and this error: POSIX error: Invalid argument (NSPOSIXErrorDomain:22) Every time I click OK to attach I get this message. It's so frustrating because I send many videos and I have to use my son's account to send them. I'll be grateful if anyone can help