Is the other computer running a ChimeraX daily build? They are looking to switch to PyQt6 in one of the next versions. A ChimeraX developer would have more details on that. Try changing your PyQt5 imports to just "Qt" (e.g. from Qt.QtWidgets import QPushButton). ChimeraX uses a shim to make things less dependent on the version of the Python Qt wrapper. Best, Tony ________________________________ From: ChimeraX-users <chimerax-users-bounces@cgl.ucsf.edu> on behalf of William Hofsøy via ChimeraX-users <chimerax-users@cgl.ucsf.edu> Sent: Friday, April 8, 2022 7:53 AM To: chimerax-users@cgl.ucsf.edu <chimerax-users@cgl.ucsf.edu> Subject: [chimerax-users] Dependency trouble [EXTERNAL SENDER - PROCEED CAUTIOUSLY] Hi, I was attempting to install my chimerax bundle on a different computer and encountered the error: No module named 'PyQt5' So I added this line to the bundle_info.xml under the Dependencies tag: <Dependency name="PyQt5"/> But I still get the same error?