Update not working

I tried to update your plugin from version 1.7.14 to 1.7.15, but that did not work, so I deleted the existing version and tried to install the latest version (1.7.15). After installing that, I again received an update notification, asking me to update from 1.7.14 to 1.7.15.

Please let me know if you need access to my site I will sent you the credentials in a private message.