diff --git a/CHANGELOG b/CHANGELOG
index 178cd6e..f576027 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,5 @@
 0.1.0
- - initial working release
+ - initial prototype release
 0.0.3
  - fix readme
 0.0.1
diff --git a/build-recipes/hook-chipstream.py b/build-recipes/hook-chipstream.py
index 62c723e..00e5d5a 100644
--- a/build-recipes/hook-chipstream.py
+++ b/build-recipes/hook-chipstream.py
@@ -10,6 +10,19 @@
 # Hook for MPL-Data-Cast
 from PyInstaller.utils.hooks import collect_data_files
 
+hiddenimports = [
+    "chipstream",
+    "chipstream.cli",
+    "chipstream.gui",
+    "dcnum",
+    "dcnum.feat",
+    "dcnum.logic",
+    "dcnum.meta",
+    "dcnum.read",
+    "dcnum.segm",
+    "dcnum.write",
+]
+
 # Data files
 datas = collect_data_files("chipstream", include_py_files=True)
 datas += collect_data_files("chipstream", subdir="gui/img")
diff --git a/chipstream/gui/__init__.py b/chipstream/gui/__init__.py
index c2ad9c7..259c526 100644
--- a/chipstream/gui/__init__.py
+++ b/chipstream/gui/__init__.py
@@ -4,15 +4,34 @@
     PyQt6 = None
 
 
+class DevNull:
+    """Effectively a file-like object for piping everything to nothing."""
+    def write(self, *args, **kwargs):
+        pass
+
+
 if PyQt6 is None:
     def main(*args, **kwargs):
         print("Please install 'chipstream[gui]' to access the GUI!")
 else:
     def main():
         from importlib import resources
+        import multiprocessing as mp
         import sys
         from PyQt6 import QtWidgets, QtCore, QtGui
 
+        mp.freeze_support()
+
+        # In case we have a frozen application, and we encounter errors
+        # in subprocesses, then these will try to print everything to stdout
+        # and stderr. However, if we compiled the app with PyInstaller with
+        # the --noconsole option, sys.stderr and sys.stdout are None and
+        # an exception is raised, breaking the program.
+        if sys.stdout is None:
+            sys.stdout = DevNull()
+        if sys.stderr is None:
+            sys.stderr = DevNull()
+
         from .main_window import ChipStream
 
         app = QtWidgets.QApplication(sys.argv)
diff --git a/chipstream/gui/main_window.py b/chipstream/gui/main_window.py
index 9641dc5..c78d66f 100644
--- a/chipstream/gui/main_window.py
+++ b/chipstream/gui/main_window.py
@@ -13,6 +13,8 @@
 
 from .._version import version
 
+from . import splash
+
 
 class ChipStream(QtWidgets.QMainWindow):
     run_completed = QtCore.pyqtSignal()
@@ -87,6 +89,8 @@ def __init__(self, *arguments):
         self.timer.timeout.connect(self.tableView_input.on_selection_changed)
         self.timer.start(1000)
 
+        splash.splash_close()
+
         # finalize
         self.show()
         self.activateWindow()
diff --git a/chipstream/gui/splash.py b/chipstream/gui/splash.py
new file mode 100644
index 0000000..0d2319a
--- /dev/null
+++ b/chipstream/gui/splash.py
@@ -0,0 +1,11 @@
+try:
+    import pyi_splash
+except (ImportError, ModuleNotFoundError):
+    pyi_splash = None
+
+
+def splash_close():
+    """Close the splash screen"""
+    if pyi_splash is not None:
+        if pyi_splash.is_alive():
+            pyi_splash.close()
diff --git a/pyproject.toml b/pyproject.toml
index b2673ba..5088255 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,12 +47,6 @@ tracker = "https://github.com/DC-Analysis/ChipStream/issues"
 documentation = "https://chipstream.readthedocs.io/en/stable/"
 changelog = "https://chipstream.readthedocs.io/en/stable/sec_changelog.html"
 
-# We need the following, because automatic package discovery does not work
-# when running cibuildwheel on GitHub Actions (there will be a "wheelhouse"
-# directory).
-[tool.setuptools]
-packages = ["chipstream"]
-
 [tool.setuptools_scm]
 write_to = "chipstream/_version.py"
 version_scheme = "post-release"