diff --git a/launch.py b/launch.py
index 0868f8a9..e1908496 100644
--- a/launch.py
+++ b/launch.py
@@ -7,6 +7,11 @@ import shlex
 import platform
 import argparse
 import json
+try:
+    from modules.paths import script_path, data_path
+except ModuleNotFoundError:
+    script_path = os.path.dirname(__file__)
+    data_path = os.getcwd()
 
 dir_repos = "repositories"
 dir_extensions = "extensions"
@@ -122,7 +127,7 @@ def is_installed(package):
 
 
 def repo_dir(name):
-    return os.path.join(dir_repos, name)
+    return os.path.join(script_path, dir_repos, name)
 
 
 def run_python(code, desc=None, errdesc=None):
@@ -215,7 +220,7 @@ def list_extensions(settings_file):
 
     disabled_extensions = set(settings.get('disabled_extensions', []))
 
-    return [x for x in os.listdir(dir_extensions) if x not in disabled_extensions]
+    return [x for x in os.listdir(os.path.join(data_path, dir_extensions)) if x not in disabled_extensions]
 
 
 def run_extensions_installers(settings_file):
@@ -306,7 +311,7 @@ def prepare_environment():
     if not is_installed("pyngrok") and ngrok:
         run_pip("install pyngrok", "ngrok")
 
-    os.makedirs(dir_repos, exist_ok=True)
+    os.makedirs(os.path.join(script_path, dir_repos), exist_ok=True)
 
     git_clone(stable_diffusion_repo, repo_dir('stable-diffusion-stability-ai'), "Stable Diffusion", stable_diffusion_commit_hash)
     git_clone(taming_transformers_repo, repo_dir('taming-transformers'), "Taming Transformers", taming_transformers_commit_hash)
@@ -317,7 +322,7 @@ def prepare_environment():
     if not is_installed("lpips"):
         run_pip(f"install -r {os.path.join(repo_dir('CodeFormer'), 'requirements.txt')}", "requirements for CodeFormer")
 
-    run_pip(f"install -r {requirements_file}", "requirements for Web UI")
+    run_pip(f"install -r {os.path.join(script_path, requirements_file)}", "requirements for Web UI")
 
     run_extensions_installers(settings_file=args.ui_settings_file)
 
@@ -325,7 +330,7 @@ def prepare_environment():
         version_check(commit)
 
     if update_all_extensions:
-        git_pull_recursive(dir_extensions)
+        git_pull_recursive(os.path.join(data_path, dir_extensions))
     
     if "--exit" in sys.argv:
         print("Exiting because of --exit argument")
@@ -341,7 +346,7 @@ def tests(test_dir):
         sys.argv.append("--api")
     if "--ckpt" not in sys.argv:
         sys.argv.append("--ckpt")
-        sys.argv.append("./test/test_files/empty.pt")
+        sys.argv.append(os.path.join(script_path, "test/test_files/empty.pt"))
     if "--skip-torch-cuda-test" not in sys.argv:
         sys.argv.append("--skip-torch-cuda-test")
     if "--disable-nan-check" not in sys.argv:
@@ -350,7 +355,7 @@ def tests(test_dir):
     print(f"Launching Web UI in another process for testing with arguments: {' '.join(sys.argv[1:])}")
 
     os.environ['COMMANDLINE_ARGS'] = ""
-    with open('test/stdout.txt', "w", encoding="utf8") as stdout, open('test/stderr.txt', "w", encoding="utf8") as stderr:
+    with open(os.path.join(script_path, 'test/stdout.txt'), "w", encoding="utf8") as stdout, open(os.path.join(script_path, 'test/stderr.txt'), "w", encoding="utf8") as stderr:
         proc = subprocess.Popen([sys.executable, *sys.argv], stdout=stdout, stderr=stderr)
 
     import test.server_poll
diff --git a/modules/sd_vae_approx.py b/modules/sd_vae_approx.py
index 0027343a..e2f00468 100644
--- a/modules/sd_vae_approx.py
+++ b/modules/sd_vae_approx.py
@@ -35,8 +35,11 @@ def model():
     global sd_vae_approx_model
 
     if sd_vae_approx_model is None:
+        model_path = os.path.join(paths.models_path, "VAE-approx", "model.pt")
         sd_vae_approx_model = VAEApprox()
-        sd_vae_approx_model.load_state_dict(torch.load(os.path.join(paths.models_path, "VAE-approx", "model.pt"), map_location='cpu' if devices.device.type != 'cuda' else None))
+        if not os.path.exists(model_path):
+            model_path = os.path.join(paths.script_path, "models", "VAE-approx", "model.pt")
+        sd_vae_approx_model.load_state_dict(torch.load(model_path, map_location='cpu' if devices.device.type != 'cuda' else None))
         sd_vae_approx_model.eval()
         sd_vae_approx_model.to(devices.device, devices.dtype)
 
diff --git a/modules/ui.py b/modules/ui.py
index 621ae952..7e603332 100644
--- a/modules/ui.py
+++ b/modules/ui.py
@@ -1751,7 +1751,8 @@ def create_ui():
 
 
 def reload_javascript():
-    head = f'<script type="text/javascript" src="file={os.path.abspath("script.js")}?{os.path.getmtime("script.js")}"></script>\n'
+    script_js = os.path.join(script_path, "script.js")
+    head = f'<script type="text/javascript" src="file={os.path.abspath(script_js)}?{os.path.getmtime(script_js)}"></script>\n'
 
     inline = f"{localization.localization_js(shared.opts.localization)};"
     if cmd_opts.theme is not None:
diff --git a/test/basic_features/extras_test.py b/test/basic_features/extras_test.py
index 0170c511..8ed98747 100644
--- a/test/basic_features/extras_test.py
+++ b/test/basic_features/extras_test.py
@@ -1,7 +1,9 @@
+import os
 import unittest
 import requests
 from gradio.processing_utils import encode_pil_to_base64
 from PIL import Image
+from modules.paths import script_path
 
 class TestExtrasWorking(unittest.TestCase):
     def setUp(self):
@@ -19,7 +21,7 @@ class TestExtrasWorking(unittest.TestCase):
             "upscaler_1": "None",
             "upscaler_2": "None",
             "extras_upscaler_2_visibility": 0,
-            "image": encode_pil_to_base64(Image.open(r"test/test_files/img2img_basic.png"))
+            "image": encode_pil_to_base64(Image.open(os.path.join(script_path, r"test/test_files/img2img_basic.png")))
             }
 
     def test_simple_upscaling_performed(self):
@@ -31,7 +33,7 @@ class TestPngInfoWorking(unittest.TestCase):
     def setUp(self):
         self.url_png_info = "http://localhost:7860/sdapi/v1/extra-single-image"
         self.png_info = {
-            "image": encode_pil_to_base64(Image.open(r"test/test_files/img2img_basic.png"))
+            "image": encode_pil_to_base64(Image.open(os.path.join(script_path, r"test/test_files/img2img_basic.png")))
         }
 
     def test_png_info_performed(self):
@@ -42,7 +44,7 @@ class TestInterrogateWorking(unittest.TestCase):
     def setUp(self):
         self.url_interrogate = "http://localhost:7860/sdapi/v1/extra-single-image"
         self.interrogate = {
-            "image": encode_pil_to_base64(Image.open(r"test/test_files/img2img_basic.png")),
+            "image": encode_pil_to_base64(Image.open(os.path.join(script_path, r"test/test_files/img2img_basic.png"))),
             "model": "clip"
         }
 
diff --git a/test/basic_features/img2img_test.py b/test/basic_features/img2img_test.py
index 08c5c903..5240ec36 100644
--- a/test/basic_features/img2img_test.py
+++ b/test/basic_features/img2img_test.py
@@ -1,14 +1,16 @@
+import os
 import unittest
 import requests
 from gradio.processing_utils import encode_pil_to_base64
 from PIL import Image
+from modules.paths import script_path
 
 
 class TestImg2ImgWorking(unittest.TestCase):
     def setUp(self):
         self.url_img2img = "http://localhost:7860/sdapi/v1/img2img"
         self.simple_img2img = {
-            "init_images": [encode_pil_to_base64(Image.open(r"test/test_files/img2img_basic.png"))],
+            "init_images": [encode_pil_to_base64(Image.open(os.path.join(script_path, r"test/test_files/img2img_basic.png")))],
             "resize_mode": 0,
             "denoising_strength": 0.75,
             "mask": None,
@@ -47,11 +49,11 @@ class TestImg2ImgWorking(unittest.TestCase):
         self.assertEqual(requests.post(self.url_img2img, json=self.simple_img2img).status_code, 200)
 
     def test_inpainting_masked_performed(self):
-        self.simple_img2img["mask"] = encode_pil_to_base64(Image.open(r"test/test_files/mask_basic.png"))
+        self.simple_img2img["mask"] = encode_pil_to_base64(Image.open(os.path.join(script_path, r"test/test_files/img2img_basic.png")))
         self.assertEqual(requests.post(self.url_img2img, json=self.simple_img2img).status_code, 200)
 
     def test_inpainting_with_inverted_masked_performed(self):
-        self.simple_img2img["mask"] = encode_pil_to_base64(Image.open(r"test/test_files/mask_basic.png"))
+        self.simple_img2img["mask"] = encode_pil_to_base64(Image.open(os.path.join(script_path, r"test/test_files/img2img_basic.png")))
         self.simple_img2img["inpainting_mask_invert"] = True
         self.assertEqual(requests.post(self.url_img2img, json=self.simple_img2img).status_code, 200)
 
diff --git a/test/server_poll.py b/test/server_poll.py
index 42d56a4c..c732630f 100644
--- a/test/server_poll.py
+++ b/test/server_poll.py
@@ -1,6 +1,8 @@
 import unittest
 import requests
 import time
+import os
+from modules.paths import script_path
 
 
 def run_tests(proc, test_dir):
@@ -15,8 +17,8 @@ def run_tests(proc, test_dir):
                 break
     if proc.poll() is None:
         if test_dir is None:
-            test_dir = "test"
-        suite = unittest.TestLoader().discover(test_dir, pattern="*_test.py", top_level_dir="test")
+            test_dir = os.path.join(script_path, "test")
+        suite = unittest.TestLoader().discover(test_dir, pattern="*_test.py", top_level_dir=test_dir)
         result = unittest.TextTestRunner(verbosity=2).run(suite)
         return len(result.failures) + len(result.errors)
     else:
diff --git a/webui.sh b/webui.sh
index 8cdad22d..7b6e0568 100755
--- a/webui.sh
+++ b/webui.sh
@@ -6,19 +6,18 @@
 
 # If run from macOS, load defaults from webui-macos-env.sh
 if [[ "$OSTYPE" == "darwin"* ]]; then
-    if [[ -f webui-macos-env.sh ]]
+    if [[ -f "$(dirname $0)/webui-macos-env.sh" ]]
         then
-        source ./webui-macos-env.sh
+        source "$(dirname $0)/webui-macos-env.sh"
     fi
 fi
 
 # Read variables from webui-user.sh
 # shellcheck source=/dev/null
-if [[ -f webui-user.sh ]]
+if [[ -f "$(dirname $0)/webui-user.sh" ]]
 then
-    source ./webui-user.sh
+    source "$(dirname $0)/webui-user.sh"
 fi
-
 # Set defaults
 # Install directory without trailing slash
 if [[ -z "${install_dir}" ]]
@@ -47,12 +46,12 @@ fi
 # python3 venv without trailing slash (defaults to ${install_dir}/${clone_dir}/venv)
 if [[ -z "${venv_dir}" ]]
 then
-    venv_dir="venv"
+    venv_dir="${install_dir}/${clone_dir}/venv"
 fi
 
 if [[ -z "${LAUNCH_SCRIPT}" ]]
 then
-    LAUNCH_SCRIPT="launch.py"
+    LAUNCH_SCRIPT="${install_dir}/${clone_dir}/launch.py"
 fi
 
 # this script cannot be run as root by default
@@ -140,22 +139,23 @@ then
     exit 1
 fi
 
-cd "${install_dir}"/ || { printf "\e[1m\e[31mERROR: Can't cd to %s/, aborting...\e[0m" "${install_dir}"; exit 1; }
-if [[ -d "${clone_dir}" ]]
+if [[ ! -d "${install_dir}/${clone_dir}" ]]
 then
-    cd "${clone_dir}"/ || { printf "\e[1m\e[31mERROR: Can't cd to %s/%s/, aborting...\e[0m" "${install_dir}" "${clone_dir}"; exit 1; }
-else
     printf "\n%s\n" "${delimiter}"
     printf "Clone stable-diffusion-webui"
     printf "\n%s\n" "${delimiter}"
-    "${GIT}" clone https://github.com/AUTOMATIC1111/stable-diffusion-webui.git "${clone_dir}"
-    cd "${clone_dir}"/ || { printf "\e[1m\e[31mERROR: Can't cd to %s/%s/, aborting...\e[0m" "${install_dir}" "${clone_dir}"; exit 1; }
+    mkdir -p "${install_dir}"
+    "${GIT}" clone https://github.com/AUTOMATIC1111/stable-diffusion-webui.git "${install_dir}/${clone_dir}"
 fi
 
 printf "\n%s\n" "${delimiter}"
 printf "Create and activate python venv"
 printf "\n%s\n" "${delimiter}"
-cd "${install_dir}"/"${clone_dir}"/ || { printf "\e[1m\e[31mERROR: Can't cd to %s/%s/, aborting...\e[0m" "${install_dir}" "${clone_dir}"; exit 1; }
+# Make venv_dir absolute
+if [[ "${venv_dir}" != /* ]]
+then
+    venv_dir="${install_dir}/${clone_dir}/${venv_dir}"
+fi
 if [[ ! -d "${venv_dir}" ]]
 then
     "${python_cmd}" -m venv "${venv_dir}"