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SDF reader error reading concatenated SDF files

Member for

2 years 3 months alexrodri01

When uploading a concatenated SDF file, I get the error No valid data header found. I understand that this is due to too many spaces in my SDF file ('…') . After removing all the spaces from the SDF file, I now get the error 'sring error -9'. filecontents[-9] consists of normal coordinates so I'm stuck in a loop of removing, then adding spaces and bouncing between these two errors.