First of all, I'm using Infopath 2013 in polish version, so the names of functions may be different.
Yesterday, I got an old Infopath 2013 file, which was migrated from 2010(at least collegue I got it from says so), including code but not documentation, which we are using in internal SPS. I was supposed to add one field and move on.
However, I can't even preview the file(file is unchanged). After some Googling I got some hints, that it may be due to file being copied&pasted and I follow tutorial on how to fix it - but to no effect.
There is an error message, yes. As you can see on image below, not even a little bit helpful. This error was sometimes related to code, but after setting breakpoint in code, nothing happens, as if it was never hit. Not even
I tried moving everything to a folder with shorter path, publishing using settings[same(probably?) error as with preview], unlinking/removing code, checking the code, publishing elsewhere(no error, still cannot preview).
Did it happen anyone else, and what can I do to fix it?