makensis not finding plugin function

[parasoul]

Hello,
Can you please take a look at this test plugin and tell me why makensis is unable to find the plugin function?

Plugin: https://www.sendspace.com/file/qde368

I'm just calling it as NSISTest::_NSIS_Test and makensis reports that "Plugin not found, cannot call NSISTest::_NSIS_Test"

The export is present and has a virtual size.

Is this a bug in makensis or a problem with the way I'm building it?

Thank you