Thanks Ferdinand. Putting those lines in the projectdefinitions.txt of the solution was the... solution

Thanks for your response. We found the issue. Turns out we had to delay load our dlls for earlier versions of the plugin R21 etc

Ok that makes a lot of sense. Ill see what i can do on my end then

I programmatically create a vector gui using CUSTOMGUI_VECTOR. I set DESC_UNIT to DESC_UNIT_METER.
However the gui will show CM after the number. And i would like it to display M for meter at the end of the number.
I cant find in the SDK how to do this

I am using the CUSTOMGUI_LINKBOX UI, but for some reason it always starts out as collapsed, but i would like to expand it.
DESC_GUIOPEN, DESC_DEFAULT both dont work.

After some digging it seems only some ShaderDatas dont have their document set. Other do have it.
However after the Read, c4d will set the document at some point, because in the ::Message() function GetDocument does return a basedocument.

Im loading in c4d project and want to get the Document the GeListNode belongs to, but i am getting a nullptr back.
Is it expected for certain ShaderDatas not to be associated with a document?

Code looks something like this:

Bool SomeShaderDataPlugin::Read(GeListNode* node, HyperFile* hf, Int32 level)
{
	const BaseDocument* bd = node->GetDocument(); //bd is nullptr sometimes for some ShaderDatas
	return SUPER::Read(node, hf, level);
}

Thanks for your response. We found the issue. Turns out we had to delay load our dlls for earlier versions of the plugin R21 etc

Im having a strange problem while trying to run our plugin on R21.207
For some reason adding two string together crashes

Crashes:

String totalPath = ppath + ver;

Doesnt Crash

String totalPath = ppath;
totalPath.Append(ver);

debug output:

../../../frameworks/cinema_emulation.framework/source/maxon/stringencoding_c4demulation.h(33): CRITICAL: Stop
A breakpoint instruction (__debugbreak() statement or a similar call) was executed in Cinema 4D.exe.

Exception thrown at 0x00007FFA047D6820 (c4dplugin.xdl64) in Cinema 4D.exe: 0xC0000005: Access violation reading location 0x00000035456D34A0.

@ferdinand
Is this still the best way to create a palette 3 years later? Preferably I would like there to be an option for our plugin to insert its objects into the standard palette.
Switching to Reshift changes the default palette, I was hoping i could do something similar.

Ofcourse in the code example i mean to set the pin data and links in their correct subcontainer, and not in the AttributeContainer

Thank you for the detailed answer.
I think I have settled on how to store data then that makes it the most future proof for us.
A quick mockup of our setup would be something like this then:

// OurShaderNode.h
enum OurShaderNode
{
    OUR_NODE_TYPE = 1001,
    OUR_NODE_PINS,
    OUR_NODE_PIN_LINKS,
    OUR_NODE_ATTRIBUTES,


    OUR_NODE_OFFSET = 10000,
// Pin Ids. These map to IDs from our application
    OUR_NODE_PIN_SCALE = OUR_NODE_OFFSET + 1; // Maps to our internal ID PIN_SCALE which is 1, same for the others
    OUR_NODE_PIN_ALBEDO = OUR_NODE_OFFSET + 2;
    OUR_NODE_PIN_SPECULAR = OUR_NODE_OFFSET + 3;
    OUR_NODE_PIN_NORMAL = OUR_NODE_OFFSET + 4;
    OUR_NODE_PIN_FRAME = OUR_NODE_OFFSET + 245;

// Attribute. These map to IDs from our application
    OUR_NODE_ATTRIBUTE_VALUE  = OUR_NODE_OFFSET + 1;
    OUR_NODE_ATTRIBUTE_COUNT  = OUR_NODE_OFFSET + 2;
    OUR_NODE_ATTRIBUTE_SCALE  = OUR_NODE_OFFSET + 3;
    OUR_NODE_ATTRIBUTE_FRAME  = OUR_NODE_OFFSET + 4;
    OUR_NODE_ATTRIBUTE_FILENAME  = OUR_NODE_OFFSET + 3456;


}

// pluginOurShaderNode.cpp
// These two functions will map c4d IDs to our internal Ids
int ConvertToOurID(OurShaderNode c4dId) { return c4dId - OUR_NODE_OFFSET; }
int ConvertToC4D(int ourId) { return ourId + OUR_NODE_OFFSET;  }

// pluginOurShaderNode is derived from the base class ShaderData
Bool pluginOurShaderNode::Init(GeListNode* node, Bool isCloneInit)
{
    BaseContainer *data = ((BaseShader*)node)->GetDataInstance();

    // The subcontainers use overlapping numbers for their IDs, but this setup gives us the biggest range of id numbers
    BaseContainer PinContainer; // Contains all pin data
    AttributeContainer.SetVector(OUR_NODE_PIN_ALBEDO, Vector(1,0,0));
    BaseContainer PinLinkContainer; // Containes links to other shadernodes. 
    AttributeContainer.SetLink(OUR_NODE_PIN_ALBEDO, nullptr);

    BaseContainer AttributeContainer; // Contains all attribute data
    AttributeContainer.SetInt32(OUR_NODE_ATTRIBUTE_VALUE);

    data->SetContainer(OUR_NODE_PINS, PinContainer);
    data->SetContainer(OUR_NODE_PIN_LINKS, PinLinkContainer); 
    data->SetContainer(OUR_NODE_ATTRIBUTES, AttributeContainer);
}