https://bugs.winehq.org/show_bug.cgi?id=27580
--- Comment #12 from Rosanne DiMesio dimesio@earthlink.net --- You did get a popup error message, and it's the one notepad gives me when I try to use it to open a file from the command line using the wrong syntax. There is a bug, and it's what's described in comment 1: notepad shouldn't eat option characters it doesn't recognize.
The problem can be reproduced on the command line by running either of these commands:
wine start notepad /path/to/file.txt wine notepad /path/to/file.txt
If you change the paths in the commands above to Windows-style ones, notepad will open the file.