Powershell Script error - Exchange

thanks. I added a second line, and that error went away. Can you assist with these errors now?

Exception calling "LoadFile" with "1" argument(s): "Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))"
At D:\Admin\Import-CalendarCSV\Import-CalendarCSV\Import-CalendarCSV.ps1:90 char:39
+  [void][Reflection.Assembly]::LoadFile <<<< ($EWSManagedApiPath);
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException

Performing autodiscover for sgrossman@mkllptest.com
Exception calling "AutodiscoverUrl" with "1" argument(s): "The Autodiscover service couldn't be located."
At D:\Admin\Import-CalendarCSV\Import-CalendarCSV\Import-CalendarCSV.ps1:120 char:27
+         $service.AutodiscoverUrl <<<< ($EmailAddress);
    + CategoryInfo          : NotSpecified: (:) [], ParentContainsErrorRecordException
    + FullyQualifiedErrorId : DotNetMethodException

Ok, I think I fixed the first error, just this one:

Exception calling "AutodiscoverUrl" with "1" argument(s): "The Autodiscover service couldn't be located."
At D:\Admin\Import-CalendarCSV\Import-CalendarCSV\Import-CalendarCSV.ps1:120 char:27
+         $service.AutodiscoverUrl <<<< ($EmailAddress);
    + CategoryInfo          : NotSpecified: (:) [], ParentContainsErrorRecordException
    + FullyQualifiedErrorId : DotNetMethodException

I don't think I can help you on that one.   Though I do see on line 93 it appears to reference Exchange 2007.  Is that the version you're using?  If not, you might have to change the command.
https://msdn.microsoft.com/en-us/library/microsoft.exchange.webservices.data.exchangeversion%28v=exchg.80%29.aspx?f=255&MSPPError=-2147217396

hmmm, good eye, we're using Exchange 2010, I'll check that. Thanks!

Original question was answered.
I'd suggest starting a new question for any follow up questions.