This isn't really a crash (if, however, Remote Buddy *actually* crashes, please send me the corresponding crash log, so I can check it out).

It's a problem during installation, caused by the location you copied Remote Buddy to (a subfolder of /Applications with special characters in it) and that the command line tools used for installing don't seem to get along with.

You can easily fix this problem by 
1) Quitting Remote Buddy

2) moving Remote Buddy either 
a) directly to /Applications 
b) to a subfolder of /Applications that's made up only of ASCII characters

3) Launching Remote Buddy from there. You can now install the driver.

Best regards, 
Felix Schwarz