Can't run Grasshopper, freezes everytime I try to open it, error message

Grasshopper
, ,
1

Hey Guys,

I have been trying for days now, but can’t seem to find the problem.
Rhino runs perfectly. But everytime I try to open grasshopper rhino completely freezes and my only option is to force the app to close.
Sometimes I get two error Messages:
Recently I’ve been using rhino on a Macbook, so I might as well need some extra explanation how to implement the tipps.

Thank you very much!!

GH Params:
Exception has been thrown by the target of an invocation.
Object reference not set to an instance of an object.

Object: GH_Params (level 1)
{
Exception has been thrown by the target of an invocation.
TargetInvocationException
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. —> System.NullReferenceException: Object reference not set to an instance of an object
at FlexHopper.GH_Params…ctor () [0x00000] in <37fcfc5b561446f1aae11c983696c52e>:0
at (wrapper managed-to-native) System.Reflection.RuntimeConstructorInfo.InternalInvoke(System.Reflection.RuntimeConstructorInfo,object,object,System.Exception&)
at System.Reflection.RuntimeConstructorInfo.InternalInvoke (System.Object obj, System.Object parameters, System.Boolean wrapExceptions) [0x00005] in <8eb149dd05a5465eb95700a3d8da7ec1>:0
— End of inner exception stack trace —
at System.Reflection.RuntimeConstructorInfo.InternalInvoke (System.Object obj, System.Object parameters, System.Boolean wrapExceptions) [0x0001a] in <8eb149dd05a5465eb95700a3d8da7ec1>:0
at System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic, System.Boolean wrapExceptions) [0x00095] in <8eb149dd05a5465eb95700a3d8da7ec1>:0
at System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly, System.Boolean wrapExceptions, System.Boolean skipCheckThis, System.Boolean fillCache) [0x00009] in <8eb149dd05a5465eb95700a3d8da7ec1>:0
at System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Boolean wrapExceptions, System.Threading.StackCrawlMark& stackMark) [0x00027] in <8eb149dd05a5465eb95700a3d8da7ec1>:0
at System.Activator.CreateInstance (System.Type type, System.Boolean nonPublic, System.Boolean wrapExceptions) [0x00020] in <8eb149dd05a5465eb95700a3d8da7ec1>:0
at System.Activator.CreateInstance (System.Type type, System.Boolean nonPublic) [0x00000] in <8eb149dd05a5465eb95700a3d8da7ec1>:0
at System.Activator.CreateInstance (System.Type type) [0x00000] in <8eb149dd05a5465eb95700a3d8da7ec1>:0
at Grasshopper.Kernel.GH_ComponentServer.LoadDocObject (System.Type T, Grasshopper.Kernel.GH_AssemblyInfo assembly, Grasshopper.Kernel.GH_GuidConflictSolution& conflictSolution) [0x00000] in :0
}

Object: GH_Params (level 2)
{
Object reference not set to an instance of an object
NullReferenceException
System.NullReferenceException: Object reference not set to an instance of an object
at FlexHopper.GH_Params…ctor () [0x00000] in <37fcfc5b561446f1aae11c983696c52e>:0
at (wrapper managed-to-native) System.Reflection.RuntimeConstructorInfo.InternalInvoke(System.Reflection.RuntimeConstructorInfo,object,object,System.Exception&)
at System.Reflection.RuntimeConstructorInfo.InternalInvoke (System.Object obj, System.Object parameters, System.Boolean wrapExceptions) [0x00005] in <8eb149dd05a5465eb95700a3d8da7ec1>:0
}

2

you can launch grasshopper from the Rhino command line with the GrasshopperLoadOneByOne and say no to 3rd party GH plugin to troubleshoot, per the error i would start with FlexHopper.

It looks like the last FlexHopper was in 2019 and intended for Windows.

3

Thank you very much, saying no to GH works.
But is there an option to fix this? I don’t think there is an option for Mac?

4

Hi Bea -

You’ll need to contact the author of the plug-in to request a macOS version.
-wim