Hi - Have had the plugin working fine since yesterday. Few minutes ago I logged into WP-admin and see this error, preventing me from navigating to anything. It also appeared near content on my blog:
"Fatal error: ThemeUpdateChecker::injectUpdate() [themeupdatechecker.injectupdate]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "ThemeUpdate" of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition in /nfs/c06/h06/mnt/86528/domains/reasonandfolly.com/html/wp-content/themes/moustachey/framework/meanthemes-updates.php on line 178"
I could see that I had a theme update pending which I ended up doing via FTP. Once new theme version was live, I went ahead and activated W3TC, only to have the same problem all over again.
I want to point out that this occurred before I even updated theme.
Make any sense?