When trying to update wordpress from 3.1 to 3.1.1 I am getting the error
Incompatible Archive.: PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir Record signature
Some searching shows a cause of this can be that the servers disk is full. My disk is not full but it was about a week ago. I believe Wordpress has the disk still flagged as full and not writeable. Does that sound plausible or does any one have any other suggestions?
I have three Wordpress blogs on the server and this is only affecting one of them.