Unreal produces byte order marks (BOM) for some reaseon (for possible solutions see #93), you can place and execute the following python code in the folder (``StudyFramework/StudyLogs``) where the phase csv files are:
These are Byte-Order-Marks (BOM) which appeared in data logged by some previous versions of the plugin. This has been fixed. If your logged data has been generated by an older version and contains BOMs, you can place and execute the following python code in the folder (``StudyFramework/StudyLogs``) where the phase csv files are, to get rid of them: