I found a couple of issues that might need to be fixed in the plugin. Maybe these are the cause of the crashes....
* The line "export 'ERRORMSG.DLL',\" needs to be changed. This lines from here specify the exports in the plugin, so it needs to be changed to
This can be one possible cause of crashing.
* The second issue is relating to how you seem to not be defining for PluginInfo.Name . A value for that needs to be defined in your plugin, so that it actually loads up correctly (as I'm aware, all N64 emu plugins need to have a name defined, for them to be usuable and selectable.)