Old Artweaver Plug-Ins do not work any longer?
The format of the Artweaver Plug-Ins has been changed since version 1.0. Thats why the current Artweaver version isn't able to load and execute Plug-Ins from older versions (0.5,0.4,...)
Please contact the manufacturer of the Plug-Ins to get a version which supports the format of the current Artweaver version.