After ticking "search for subfolders," the program hangs and becomes unresponsive

[DRB]

I downloaded the emulator (3.0-427) and it's been running great all day, no problems at all.

The only thing is, isos weren't showing up on the main window then I booted the program. Apparently it wasn't finding them in the directory I chose.

I realized that they were each in their own individual folder, so I checked "search for subfolders." Then, the program became unresponsive, and now I can't really do anything about it.

My question is, if I uninstall and reinstall the program, will I lose any memory card data?
Furthermore, how do I get iso files to show up like a list when I start the application?

Thanks in advance.