Very strange issue: just tried to upgrade to backup for Wordpress pro 1.0.0 stable.
In the System Configuration area, I am unable to save any settings at all! Both the "Save & Close" and "Apply" buttons do nothing, however the "Cancel" button does. Looking at the Configuration tab, I see nothing (i.e. no settings at all) however, the warning and informational messages do appear.
In order to elimiate the possibility of plugins that may be interfering, I've built a plain vanilla 3.9.1 Wordpress installation with no plugins - straight of the box - with exactly the same result!
Bit perplexed, to say the least.
Previously, 1.0b3 and b4 worked just fine. Any suggestions?