Updated to 42.0.2393.517: Exactly the same behaviour; tries to open new tab instead of showing Save As.. dialog. Works with a link to a XML file, does not with a CSV.

I have the same problem as opera-nix, but with CSV files. So:

Description: Opera crashes when trying to download a CSV file from link in web page (does not show Save As dialog). From same site XML file download works (shows Save As dialog).

Steps to reproduce: With site www.op.fi, select a report file. With another site page, selecting XML report.

Actual result: Opera tries to open a new tab and promptly crashes.

Expected result: A Save As dialog should open up allowing me to save downloaded file with specified name.

OS: Ubuntu 16.04.1 LTS (x86_64; Unity)

URL: https://www.op.fi (requires login)

Version of Opera: 42.0.2393.351

Previously the CSV download worked without a problem. For now workaround is to use "Save linked content as...". As far as I know, I haven't changed any settings in Opera.

in syslog:
'Jan 24 19:21:24 hauki kernel: [ 1375.196870] opera[7430]: segfault at 80 ip 000000000262ecc0 sp 00007ffd3ffe9b38 error 4 in opera[400000+5bdf000]'

Opera creates a crashlog to /tmp