Can't registrated panel in rhino C#

Dear all!
I am a biginer in Rhino plugin developing and i have some problems with registrating the panel.
Could you, please explain to me how I could solve this exception: "System.ArgumentException: “type must have a GuidAttribute”
I have found a lot of examples and generated a guid.code but this exception still happens.
Thank you

Denis K.

Hi @stritfotospb,

Add something like this to your panel definition:



– Dale

Thanks a lot!