A CRC or a Checksum is basically a way to uniquely identify data. https://www.howtogeek.com/363735/what-is-a-checksum-and-why-should-you-care/

Hi Pim, thanks for reaching out us. With regard to your question, given for comments from Cairyn, I recommend to refine your approach and to look on the web since there are a few different strategies to find the largest inscribed rectangle in a non-convex polygon (among them I recommend having a look at this). With regard to the points walking direction for a given polygon this is defined by the polygon normal and the left-hand rule and it should definitively not be randomly defined. Cheers, Riccardo

Hi @bentraje, since you rotate the axis (with SetMg) you also need to update the tangents according to the correct axis since tangents are in local space of points positions which are also in local space of the object. But as you figured is more rigging than a programming issue. And if you already solve the issue congratz! Cheers, Maxime.

Hi @blastframe, I can only confirm what's @mp5gosu said, and confirm that c4dpy is a complete Cinema 4D executable, just opened as a python interpreter mode. So nothing to do here, unfortunately. Cheers, Maxime.

@m_adam said in Pycharm - Invalid Python SDK: Hi, @blastframe thanks for contact us. So far we never encounter this issue and we are not able to reproduce it so few ideas to try: Make sure you have permission to write in the Cinema 4D folder and subfolder. Flush the cache, https://stackoverflow.com/a/45099651. Send us your PyCharm log, see https://intellij-support.jetbrains.com/hc/en-us/articles/207241085-Locating-IDE-log-files Cheers, Maxime. Hi @m_adam, Thank you for the reply. I ran PyCharm as an Administrator and flushed the cache. I still received the same error. When I looked at the log, I found a lot of missing file errors, which made me think I had the python.exe (c4dpy.exe) file in the wrong location. When I moved the file to the same folder as the R20 .exe, PyCharm started working. I was confused about the file location because, while in the Install instructions from the C4D Python SDK Documentation has the c4dpy in the C4D folder, this image made it seem like it could exist in a separate folder: [image: 1558553507512-c4dpy_pycharm_win2.png] I would have expected a file location similar to the default Windows location: C:\Program Files\MAXON\Cinema 4D R20\python.exe Thank you again. I have one follow-up question that I'll ask as a new topic.

@m_adam Gotcha. Work as expected. Thanks for the response. Have a great day ahead!

@m_magalhaes Thanks,i will try to use C++

Any news? I turned your topic as solved, but feel free to ask questions, or bump it again if you need it. Cheers, Maxime.

Again sorry, I've tested with the Studio version. Using C4DPL_PROGRAM_STARTED case I can confirm this "bug" with a Educational version and a Demo version. Not with the Studio version. Maybe something with that extra "popup" windows on those both versions. Cheers Manuel.

Thank YOU

@m_magalhaes thank you : ) : ) : )

Hello, nothing more to add here except that we confirm and thanks @C4DS for his answer. Cheers Manuel

Hi @pim, does the solution provided is ok for you? EDIT: I turned it into solved but please feel free to open it again if you need to.

Since no news, I mark it as solved (closed), but feel free to open it again.

Hello @m_adam I see, I will have to use one of the other alternatives then. Thank you.

@m_magalhaes thank you for your answer

@m_adam Thank you. Thank you very much！

Hi Daniel, thanks for sharing your further considerations. I see your points and maybe we should consider to update our documentation to reflect the notes above. I will discuss with the team and maybe we could come with a better introduction where the "plugin" term is used in a less generic meaning. Cheers, Riccardo

hello, while RegisterCustomGuiPlugin could be called in all your plugins, the issue is that you will have a message in the console indicating that the id is already used / in conflict. So you can check, as you stated, if the library is already installed with IsLibraryInstalled or using FindPlugin and only register and install the library if you find nothing. The load order here should not be a problem as all modules should be loaded before you need to call anything related to the UI. Instead of FindPlugin,for CUSTOMDATATYPEPLUGIN or RESOURCEDATATYPEPLUGIN you can use FindCustomDataTypePlugin or FindResourceDataTypePlugin Cheers Manuel

@m_adam Oh okay. Thanks for the confirmation. Have a great day ahead!