InfoPath Dev

I tried to use the "Qdabra InfoPath to SharePoint List Tool" but when I tried to add the source .xsn I got an error:

Error occurred in function ExtractXSN().
Details: Request for the permission of type 'System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b7a5c561934e089' failed.

I previously installed the form apparently successfully, does anyone know what this means?

So - you can open the form w/out any errors? You are using IP 2010? But you get an error when the form tries to extract the template file...

Yes I think the first file opens without issue, but when I try to attach the source form file I get this error. I have tried it with several forms and they all give this error. After that I can pull up my Sharepoint list info, but the List Importer Schema Tree from my source form won't display at all. I am using IP2010.

 I have your email - I'll send you a new version of this form you can install and try.

EDIT: You are opening the form by double clicking it or opening from InfoPath, correct? You aren't opening in design and previewing it?