For three days running now, I have attempted to upload a CSV file to my site, and get nine (9) iterations of this error message each time:
[22-Mar-2016 11:07:40 America/Chicago] PHP Warning: Invalid argument supplied for foreach() in /home/indexvir/public_html/plugins/CsvImport/forms/Mapping.php on line 292
File has nine variables/columns, so I presume that the number of "invalid argument" errors is a result of that form.
I looked up all the posts that I could find here concerning CSV loading problems and sensed that this is a file-format issue often noted; so I tried to upload CSV files generated in both OpenOffice and LibreOffice, but got those error messages again (indeed, the LibreOffice variant locked up Windows Explorer on my Win 7 machine).
I am using the Reclaim Hosting service, with Omeka version 2.3.1, if that matters. I have also enabled all error logging services (both in host and Omeka) in order to try to track what is going on here.