Get error message while saving MF4-file as CSV

[Sergeant68]

Hello GitHub asammdf Forum,

I am experiencing a peculiar issue when saving an MF4 file to a CSV file using mdf.export().
An MF4 file containing real CAN data from a car can only be saved as CSV without errors on a notebook belonging to a Japanese friend with Japanese Windows 11

The size of the MF4 file is around 80 MB.

When doing
mdf.export('csv', 'export', single_time_base=True, raster = 4e-2 ,time_as_date=True)

The following error always appears on laptops with German Windows 11:
Err typ: <class “numpy.core._exceptions._ArrayMemoryError”> Failed to extract signals. Error: Unable to allocate 8.81 PiB for an array with shape (1239693186301953,) and data type float64

Remark: 8.81 PiB is beyond any required size, 1 PiB is 2 to the power of 50 !

I have tried this on 3 different German Windows 11 laptops, and the same error always appears!
Where Python sees a shape(1239693186301953,) ?

Inexplicable:
When I create a synthetic MF4 file in a Python program, it can always be saved as a CSV file without any problems using mdf.export('csv', 'export', single_time_base=True, raster = 4e-2 , time_as_date=True)
even on a laptop with German Windows 11 and even if the size of the MF4 file is 800 MB !

Does anyone have any idea what could be causing this behaviour?
How can the contents of an MF4 file cause Python to crash while saving as CSV using mdf.export()?
I am using Python 3.7.4.

Thanks for any hint!

[danielhrisca]

hello, I need the file to debug