Crash when trying to convert mixed ink to CMYK

Question

I have a mixed ink color consisting of Process Cyan (79%) and a spot color that I created (53%).
I'm trying to convert it to CMYK using IColorSystemUtils::ColorTransform(), but that just causes a crash (in CS3, CS4, and CS5).
Here's a code snippet (sourceColorData is an IColorData InterfacePtr):
    // This returns an array of 2 values: .79 and .53
    ColorArray sourceArray = sourceColorData->GetColorData();
    // This returns kPMCsDeviceN (9)
    int32 sourceSpace = sourceColorData->GetColorSpace();
    // Note that nowhere is there any information about the cyan and spot color
    // values that combine to form my mixed ink color! It seems like I'd need that.
    // How do I get it?
    // Trying to convert to CMYK causes a crash
    ColorArray destArray = Utils<IColorSystemUtils>()->ColorTransform(doc, sourceArray, sourceSpace, kPMCsCalCMYK);
Can anyone help? I recently inherited this code and I'd like to make it work. Thanks.
Bob

Answer 1

You can try exporting selections as excel workbook and check
Export Selection As Excel Workbook (.*xlsx): To copy the whole or part of a PDF table to Excel with Adobe Acrobat, select the table you need > Right click to reveal the option "Export Selection As…" > Click Export Selection As… > Name the file and select Excel Workbook (.*xlsx) from the Save as type drop-down list.
Save as Microsoft Excel Workbook: To convert a whole PDF file to Microsoft Excel Workbook with Adobe Acrobat, click File > Save As… >Spreadsheet > Microsoft Excel Workbook.