My First Plugin - Failure

[Borgster]

So I started Autodesk tutorial "My First Plugin" - http://usa.autodesk.com/adsk/servlet...12&id=18162797

I entered and compiled the code as directed. Upon loading it in AutoCAD I get the following error:

"Cannot load assembly. Error details: System.IO.FileLoadException: Could not load file or assembly 'file:///P:\Projects\KeepAttributesHorizontal\KeepAttributesHorizontal\bin\Release\KeepAttributesHorizontal.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)
File name: 'file:///P:\Projects\KeepAttributesHorizontal\KeepAttributesHorizontal\bin\Release\KeepAttributesHorizontal.dll' ---> System.NotSupportedException: An attempt was made to load an assembly from a network location which would have caused the assembly to be sandboxed in previous versions of the .NET Framework. This release of the .NET Framework does not enable CAS policy by default, so this load may be dangerous. If this load is not intended to sandbox the assembly, please enable the loadFromRemoteSources switch. See http://go.microsoft.com/fwlink/?LinkId=155569 for more information.
at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.InternalLoadFrom(String assemblyFile, Evidence securityEvidence, Byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm, Boolean forIntrospection, Boolean suppressSecurityChecks, StackCrawlMark& stackMark)
at System.Reflection.Assembly.LoadFrom(String assemblyFile)
at Autodesk.AutoCAD.Runtime.ExtensionLoader.Load(String fileName)
at loadmgd()

So, in case I just typed something wrong, I copied and pasted the code from the tutorial and recompiled it. Same error.
My system specs are as follows:

MS Windows 7 64-bit SP1
AutoCAD 2013 64-bit


Any suggestions?

[BlackBox]

"Cannot load assembly. Error details: System.IO.FileLoadException: Could not load file or assembly 'file:///P:\Projects\KeepAttributesHorizontal\KeepAttributesHorizontal\bin\Release\KeepAttributesHorizontal.dll' or one of its dependencies. Operation is not supported. (Exception from HRESULT: 0x80131515)
File name: 'file:///P:\Projects\KeepAttributesHorizontal\KeepAttributesHorizontal\bin\Release\KeepAttributesHorizontal.dll' ---> System.NotSupportedException: An attempt was made to load an assembly from a network location which would have caused the assembly to be sandboxed in previous versions of the .NET Framework. This release of the .NET Framework does not enable CAS policy by default, so this load may be dangerous. If this load is not intended to sandbox the assembly, please enable the loadFromRemoteSources switch. See http://go.microsoft.com/fwlink/?LinkId=155569 for more information.
at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.InternalLoadFrom(String assemblyFile, Evidence securityEvidence, Byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm, Boolean forIntrospection, Boolean suppressSecurityChecks, StackCrawlMark& stackMark)
at System.Reflection.Assembly.LoadFrom(String assemblyFile)
at Autodesk.AutoCAD.Runtime.ExtensionLoader.Load(String fileName)
at loadmgd()

Consider loading the assembly from a local directory instead of a network location.

If you must load the assembly from a network location, then consider this thread when modifying acad.exe.Config (after you make a backup copy):

Loading blocked and network-hosted assemblies with .NET 4

HTH

[Borgster]

Thank you Renderman. That did it. I decided to just move it to my local drive for now. I will keep training and experimental work local for now. I also appreciate the link to the explanation as to why this was happening.

[BlackBox]

Thank you Renderman

No worries; I'm happy to help.