Ziplib - ziparchive::getentry() returns empty entry in 64-bit builds

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I'm trying to implement a way for my game engine to unzip files that it needs. In order to do this I use a library called ZipLib, but I'm having a problem where the ZipArchive::GetEntry() function returns en empty entry. The weird part is that it only does that in 64-bit builds. 32-bit builds run fine even though the code is exactly the same.

Here's my code:

std::string LoadSingleFileContent(const std::string& path)
{
	ZipArchive::Ptr archive = ZipFile::Open(m_gameRootPath + DATA_PAK_PATH);
	if (archive == NULL)
	{
		throw(std::exception("Failed to load PAK archive."));
	}

	ZipArchiveEntry::Ptr entry = archive->GetEntry(path); // returns invalid entry on 64-bit builds only

	std::istream* compressionStream = entry->GetDecompressionStream(); // since entry is invalid, this crashes
	std::string content(std::istreambuf_iterator<char>(*compressionStream), {});

	return content;
}

What I have tried:

Nothing. I have been unable to find any information about this issue :/