I've been seeing this since I started using Mp3tag (somewhere around 2.30):
When editing tags via Extended Tags..., I use Ctrl+Delete to delete words right to the cursor. If I press Ctrl+Delete when there are no more words to delete, I get this error and have to press OK to continue:
---------------------------
Mp3tag v2.36d
---------------------------
Runtime Error
File: .\sedit.cpp
Line: 122
The application encountered an unexpected exception
and is in an undefined state. Please close the application and
send the file
C:\Profiles\Administrator\Application Data\Mp3tag\Mp3tagError.log
and a detailed error description to our support staff.
eMail: .......@mp3tag.de
---------------------------
OK
---------------------------
I attach the log file.
Thanks to Florian and all contributors for Mp3tag!
Aha! If you move the cursor to the beginning and really delete everything, I don't get the error. However, if you move the carret to the middle of the text and start deleting, the error indeed appears. The "trick" is to have some words on the left side of the cursor.