If you have items where several already uploaded attachments render as broken links in Nintex Forms due to a single quote used instead of an apostrophe in the file name (bad practice, but do the end-users care?), there's good news to come. Nintex Support engineers have confirmed the intention to handle this as a defect, so the fix for this particular instance might be on the way soon. That's less likely for a plus sign which can be a problem as well if not URL-encoded, because they are entirely a different problem, but who knows.
Solved! Go to Solution.
I haven't verified yet, but it must already be fixed since May 2015 release (NF 2013 22.214.171.124). Yes, some implementations are behind the release schedule...