Initializes the plugins by loading modules from the inputted paths.

def loadPlugins(cls):
        """
        Initializes the plugins by loading modules from the inputted paths.
        """
        plugs = getattr(cls, '_%s__plugins' % cls.__name__, None)
        if plugs is not None:
            return

        plugs = {}
        setattr(cls, '_%s__plugins' % cls.__name__, plugs)
        typ = cls.pluginRegisterType()

        for path in cls.pluginPath():
            base_package = projex.packageFromPath(path)
            base_path = os.path.normpath(projex.packageRootPath(path))

            # make sure it is at the front of the path
            if base_path in sys.path:
                sys.path.remove(base_path)

            sys.path.insert(0, base_path)
            processed = ['__init__']

            # load support for registries
            if typ & Plugin.Type.RegistryFile:
                files = glob.glob(os.path.join(path, '*/register.xml'))
                for file_ in files:
                    name = os.path.normpath(file_).split(os.path.sep)[-2]
                    processed.append(name)

                    try:
                        proxy = PluginProxy.fromFile(cls, file_)
                        cls.register(proxy)

                    except Exception, e:
                        name = projex.text.pretty(name)
                        err = Plugin(name)
                        err.setError(e)
                        err.setFilepath(file_)

                        cls.register(err)

                        # log the error
                        msg = "%s.plugin('%s') failed to load from %s."
                        logger.warning(msg % (cls.__name__, name, file_))
                        logger.error(e)

            # load support for packages
            if typ & Plugin.Type.Package:
                files = glob.glob(os.path.join(path, '*/__init__.py'))
                for file_ in files:
                    name = os.path.normpath(file_).split(os.path.sep)[-2]
                    if name in processed:
                        continue

                    processed.append(name)
                    package = '.'.join([base_package, name]).strip('.')
                    if not package:
                        continue

                    try:
                        __import__(package)

                    except Exception, e:
                        name = projex.text.pretty(name)
                        err = Plugin(name)
                        err.setError(e)
                        err.setFilepath(file_)

                        cls.register(err)

                        # log the error
                        msg = "%s.plugin('%s') failed to load from %s."
                        logger.warning(msg % (cls.__name__, name, file_))
                        logger.error(e)

            # load support for modules
            if typ & Plugin.Type.Module:
                files = glob.glob(os.path.join(path, '*.py'))
                for file_ in files:
                    name = os.path.basename(file_).split('.')[0]
                    if name in processed:
                        continue

                    processed.append(name)
                    package = '.'.join([base_package, name]).strip('.')
                    if not package:
                        continue

                    try:
                        __import__(package)

                    except Exception, e:
                        name = projex.text.pretty(name)
                        err = Plugin(name)
                        err.setError(e)
                        err.setFilepath(file_)

                        cls.register(err)

                        # log the error
                        msg = "%s.plugin('%s') failed to load from %s."
                        logger.warning(msg % (cls.__name__, name, file_))
                        logger.error(e)