Install Failed on iOS 11.5 Big Sur due to bad zip file and validation error

I tried installing Open LP on a new Apple Macbook Air running iOS Big Sur Version 11.5.

When I try to launch the program I am getting a crash due to bad zip file. I tried downloading it multiple times on different connections.

We also have another Macbook Air (the same model) that runs OpenLP just fine on the same iOS version.

Can anyone give me any ideas on what I need to check?

Error details are below and screenshot is attached. Thanks!


Traceback (most recent call last):

File "openlp/core/ui/", line 546, in unzip_theme

File "", line 937, in __init__

File "", line 978, in _RealGetContents

zipfile.BadZipFile: File is not a zip file


During handling of the above exception, another exception occurred:


Traceback (most recent call last):

File "", line 44, in <module>

File "openlp/core/", line 437, in main

File "openlp/core/", line 142, in run

File "openlp/core/common/", line 137, in execute

File "openlp/core/ui/", line 144, in bootstrap_initialise

File "openlp/core/ui/", line 445, in load_first_time_themes

File "openlp/core/ui/", line 582, in unzip_theme



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