When I copy a Plugin-DLL into the ACT! Plugins directory, usually the Plugin is loaded when ACT! is started. But sometimes when replacing this DLL with a newer one, it is not loaded anymore. Then I have to rename the DLL (to some name that was not used before, ex. myplugin_20080312.dll), so that it is loaded again. But sometimes this also does not help and I can not get the plugin to be loaded again!