Were you low on space when you installed PortaBase? Version 1.9 uses about 1.75 MB. Another possibility is that another application installer did something weird to /opt/QtPalmtop/etc/mime.types, which is updated by the post-installation script; after installation it should contain entries for application/portabase (pob) and text/x-csv (csv). Those are the only possible reasons that come to mind for the installer error message...
Note that PortaBase only considers files with a \".csv\" extension as valid CSV files, so files with \".txt\" or such won\'t be listed. Also, you need to create a new file and define its format before you can import data from a CSV file; hence it isn\'t an option when choosing \"Import\" from the file selector menu (XML and MobileDB files define their data types, so they can be imported directly as new PortaBase files). Instead you need to create or open a file and choose the \"Import\" menu item shown in the data viewer screen.
Unfortunately, CSV import in PortaBase is kind of like the Debian installer; it hasn\'t been improved much since the first version because I only had to deal with it when first migrating my data, but it scares some people off because it\'s the first part of the program they use. I plan to add a new CSV import dialog in version 2.0 that makes this a little more user-friendly, so you can define the format for the new file while looking at data from the CSV file to be imported, similar to the CSV import dialogs in common spreadsheet applications.
Hope this helps,
Jeremy
