Which rhino version are you using?
version: Rhino 8 SR13，Rhino software error:Unknown instruction
@Ward pls run _SystemInfo in Rhino and post back the results.
Unable to load byRhinoGadgetPlus.rhp plugin: initialization failed！
Try to update your Rhino (8.16 or later) and load the plugin again.
I’ll try. Thanks a lot
It’s working again! thanks @yoon1
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@Cumberland Can you send or post a sample 3dm file with this wrong problem? It works fine for me.
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Yes, Basically any rectangular shape it is giving-me this result.
ByRhinoGadget_BB_with_Dimensions.3dm (91.5 KB)
Yes, I just found it! It was already fixed in the Rhino 8 plugin, but I didn’t realize it. I just uploaded the updated version 1.0.11, please give it a try.
The AddCallouts Rhino command will be included in the next byRhinoGadget update. It will be available in both model and page views, making it useful even when using layouts. Rhino users who do not use Grasshopper can look forward to the next byRhinoGadget update.
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Will it be available for Rhino 7, as well?
I think 1.0.11 refers to the rhino 7 version
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I also thought that way, but asked just in case. 
Sorry, we don’t have any plans to add new commands in Rhino 7. I hope you move to Rhino8 soon.