Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information

I have been using the following Powershell to browse around some assemblies
$assembly = [Reflection.Assembly]::Load('myassembly')
$assembly.GetTypes()

Sometimes, I get the following exception:
Exception calling "GetTypes" with "0" argument(s): "Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information."
At line:1 char:19
+ $assembly.GetTypes <<<< ()
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException


To get at the actual error, I use the following:
$x = $Error[0]
$x.Exception.GetBaseException().LoaderExceptions

Then all I had to do was to load the assemblies that were listed and my initial Load() now works.