DO12 - Crashes - Rename matching filenames as one

When I choose the option Rename matching filenames as one while having folders selected, DO12 crashes. See error below.
If I have only files selected, I can check the box without any problem.

I can't reproduce this so far, at least not just by selecting a folder and turning on the option.

What are the other details of your Rename dialog setup when it happens? Could you show a screenshot of the full dialog immediately before you turn the option on?

There should be a crash dump created. If there is, please zip and email it to leo@gpsoft.com.au as it should tell us where in the code the crash is happening.

Thank you, that has been fixed for the next update.

The cause is actually if a file or folder name is turned into nothing at all (0 length string) and the "rename matching filenames as one" option is on.