I have a client that uses Thunderbird 15 on OS X 10.7.4. Each time she tries to save an attachment, the program crashes. If she opens the attachment outright a nondescript error message is produced, indicating the program cannot save the attachment. Thunderbird is set to save attachments to her downloads folder, though it doesn't seem to be doing that. The user does have a very large amount of mail in her inbox. We have tried uninstalling and reinstalling Thunderbird with no success.
Has anyone else run across this problem?