asp.net mvc 3 - Import Cardinality Mismatch Exception -

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i have main app , plugin. main app exporting ihost object , plugin importing ihost object. ran mefx , recognizes both of those. when /causes on plugin gives me importcardinalitymismatchexception. container sees plugin, when call me.container.getexports(of icontroller)() doesn't return anything.

my controller looks this:

class controller     implements icontroller       ' ...     <import()>     public property host lazy(of ihost)    ' ... end class

i had <importmany()> in plugin. variable importing needed make ienumerable(of lazy(of ihost)) or use lazy(of ihost) if want <import()>


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