If I mouse over the Open button I get a menu of recent documents. One of my recent documents has an underscore ("_") in the name. I named it C:\path\to\_Template.cayra. In this menu it shows up as simply C:\path\to\Template.cayra, without the underscore. If I select it, the correct file opens, so it is not a big deal really, but wanted to point it out.

I just upgraded to 0.9.5, but I think this issue also existed in 0.9.0.