diff --git a/setup.py b/setup.py
new file mode 100644
index 00000000..6f31c1dc
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,21 @@
+from setuptools import find_packages, setup
+
+setup(
+    name="threestudio",
+    version='"0.2.3"',  # the current version of your package
+    packages=find_packages(),  # automatically discover all packages and subpackages
+    url="https://github.com/threestudio-project/threestudio",  # replace with the URL of your project
+    author="Yuan-Chen Guo and Ruizhi Shao and Ying-Tian Liu and Christian Laforte and Vikram Voleti and Guan Luo and Chia-Hao Chen and Zi-Xin Zou and Chen Wang and Yan-Pei Cao and Song-Hai Zhang",  # replace with your name
+    author_email="shaorz20@mails.tsinghua.edu.cn",  # replace with your email
+    description="threestudio is a unified framework for 3D content creation from text prompts, single images, and few-shot images, by lifting 2D text-to-image generation models.",  # replace with a brief description of your project
+    install_requires=[
+        # list of packages your project depends on
+        # you can specify versions as well, e.g. 'numpy>=1.15.1'
+    ],
+    classifiers=[
+        # classifiers help users find your project by categorizing it
+        # for a list of valid classifiers, see https://pypi.org/classifiers/
+        "License :: Apache-2.0",
+        "Programming Language :: Python :: 3",
+    ],
+)
diff --git a/threestudio/__init__.py b/threestudio/__init__.py
index 3740dbe7..9b7b83be 100644
--- a/threestudio/__init__.py
+++ b/threestudio/__init__.py
@@ -1,5 +1,5 @@
 __modules__ = {}
-__version__ = "0.2.2"
+__version__ = "0.2.3"
 
 
 def register(name):
diff --git a/threestudio/models/prompt_processors/base.py b/threestudio/models/prompt_processors/base.py
index 9a1ccf76..9a402daf 100644
--- a/threestudio/models/prompt_processors/base.py
+++ b/threestudio/models/prompt_processors/base.py
@@ -295,8 +295,11 @@ def configure(self) -> None:
 
         self.direction2idx = {d.name: i for i, d in enumerate(self.directions)}
 
-        with open(os.path.join("load/prompt_library.json"), "r") as f:
-            self.prompt_library = json.load(f)
+        if os.path.exists("load/prompt_library.json"):
+            with open(os.path.join("load/prompt_library.json"), "r") as f:
+                self.prompt_library = json.load(f)
+        else:
+            self.prompt_library = {}
         # use provided prompt or find prompt in library
         self.prompt = self.preprocess_prompt(self.cfg.prompt)
         # use provided negative prompt
diff --git a/threestudio/utils/GAN/__init__.py b/threestudio/utils/GAN/__init__.py
new file mode 100644
index 00000000..e69de29b