[Flyflo]

I don't think this plugin can block the new exploit, the method is very different.

[snelvuur]

i had one of those guys building dispensors, that seem to be fixed with this it seems, however sentry's can still be build.

[McFlurry]

The new exploit works the same way though there is a process to actually getting "build 2 0" to work for infinite items. If this plugin blocks the build command if it has a second argument it should stop the exploit altogether.
If it doesn't just make the plugin block build if it has more than 1 argument.
Or try this.