Unable to run any tests for .NET client

Errors and Failures:
1) SetUp Error : Infinispan.HotRod.Tests.ConfigurationBuilderTest.AddServersTest
   SetUp : System.TypeInitializationException : The type initializer for 'Infinispan.HotRod.SWIG64.hotrodcsPINVOKE' threw an exception.
  ----> System.TypeInitializationException : The type initializer for 'SWIGExceptionHelper' threw an exception.
  ----> System.BadImageFormatException : An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)
   at Infinispan.HotRod.SWIG64.hotrodcsPINVOKE.new_ConfigurationBuilder()
   at Infinispan.HotRod.SWIG64.ConfigurationBuilder..ctor()
   at Infinispan.HotRod.Config.ConfigurationBuilder..ctor()
   at Infinispan.HotRod.Tests.ConfigurationBuilderTest.Before() in c:\workdir\test_dir\src\test\cs\Infinispan\HotRod\ConfigurationBuilderTest.cs:line 15
--TypeInitializationException
   at Infinispan.HotRod.SWIG64.hotrodcsPINVOKE.SWIGExceptionHelper..ctor()
   at Infinispan.HotRod.SWIG64.hotrodcsPINVOKE..cctor()
--BadImageFormatException
   at Infinispan.HotRod.SWIG64.hotrodcsPINVOKE.SWIGExceptionHelper.SWIGRegisterExceptionCallbacks_hotrodcs(ExceptionDelegate applicationDelegate, ExceptionDelegate arithmeticDelegate, ExceptionDelegate divideByZeroDelegate, ExceptionDelegate indexOutOfRangeDelegate, ExceptionDelegate invalidCastDelegate, ExceptionDelegate invalidOperationDelegate, ExceptionDelegate ioDelegate, ExceptionDelegate nullReferenceDelegate, ExceptionDelegate outOfMemoryDelegate, ExceptionDelegate overflowDelegate, ExceptionDelegate systemExceptionDelegate)
   at Infinispan.HotRod.SWIG64.hotrodcsPINVOKE.SWIGExceptionHelper..cctor()

 FAILED: testBooleanConstructor
java.lang.NoClassDefFoundError: Could not initialize class Infinispan.HotRod.SWIG64.hotrodcsPINVOKE
        at cli.Infinispan.HotRod.SWIG64.hotrodcsPINVOKE.new_RemoteCacheManager__SWIG_0(Unknown Source)
        at cli.Infinispan.HotRod.SWIG64.RemoteCacheManager.<init>(Unknown Source)
        at cli.Infinispan.HotRod.RemoteCacheManager.<init>(Unknown Source)
        at cli.Infinispan.HotRod.Wrappers.RemoteCacheManager.<init>(RemoteCacheManager.cs:48)
        at org.infinispan.client.hotrod.RemoteCacheManager.<init>(RemoteCacheManager.java:45)
        at org.infinispan.client.hotrod.RemoteCacheManagerTest.testBooleanConstructor(RemoteCacheManagerTest.java:60)
        at org.infinispan.client.hotrod.JavaClientTests.main(JavaClientTests.java:96)
... Removed 18 stack frames