MZ_STREAM_ERROR when trying to write to split archive with >50GB split size

[oijroiwjer2134313]

Hi,
I am currently working with 55db144 and am having troubles when trying to write to archives with very large split sizes.

const LONGLONG zipSize = 50LL * 1024 * 1024 * 1024; 
zipStream = mz_stream_os_create();
zipWriter = mz_zip_writer_create();
val = mz_zip_writer_open_file(zipWriter, szZIPPath, zipSize,0);
if (val != MZ_OK) {
 //log error
}

mz_zip_file fileInfo = { 0 };
fileInfo.filename = newPath.c_str();
fileInfo.modified_date = FileTimeToUnixTime(modification);
fileInfo.creation_date = FileTimeToUnixTime(creation);
fileInfo.accessed_date = FileTimeToUnixTime(access);
fileInfo.compression_method = MZ_COMPRESS_METHOD_DEFLATE;
fileInfo.zip64 = MZ_ZIP64_AUTO;
fileInfo.uncompressed_size = nFileSize;
fileInfo.version_madeby = MZ_VERSION_MADEBY;
fileInfo.flag |= MZ_ZIP_FLAG_UTF8;

// Open the ZIP entry
err = mz_zip_writer_entry_open(zipWriter, &fileInfo);  
// code to write the entry
mz_zip_writer_entry_close(zipWriter);

//code to eventually close the zipwriter

This all works fine as long as my zipSize stays at 50GB or lower. Once I set it to more than 50GB I get an MZ_STEAM_ERROR when calling
mz_zip_writer_entry_open(zipWriter, &fileInfo);

Am I missing something here / doing something fundamentally wrong?

Thank you for your help!