java.lang.SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version

This error can arise if you are trying to run the Proparse dll files across a network without adequate access for the dll. For example, if you run Prolint from c:\prolint, but your dll files are located on a mapped drive e:\assemblies, you may get this error. Putting the dll files (assemblies from Proparse) on your local PC should avoid this error - unless you have limited access even on your PC.