New answers tagged mac
After some attempts I've found a some sort of solution. As I can understand there's no way to find a default repository for gsb file as for Windows or Linux so you need to define the gsb full path inside the target-CRS string. E.g if the ROME40.gsb is inside /Users/dzuliani/ format the +nadgrids as in the following string +proj=tmerc +lat_0=0 +lon_0=6 ...
Follow this link to a QGIS 2.0 Workshop on how to Install QGIS on Mac OS X. It will give you instructions on how to install a new version of QGIS (latest one) with all dependencies. Initially, it will also lead you to the place where you can download a compatible version.
I should add that the 'save as windows CSV' fix worked for me, except I couldn't just re-save the same file as Windows CSV. For some reason I had to copy the contents of the previous CSV file into a new spreadsheet "save as Windows CSV", and finally it imported correctly into QGIS. Hope that helps someone!
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