When you click the "Click here to browse VoiceAttack's data folder." link on the "System / Advanced" tab of the VoiceAttack options window, in the folder that's shown there should be a file named "VoiceAttack.dat" (if you don't have file extensions shown, it may just show as "VoiceAttack"), and a folder named "Backup".
Optionally there may also be a file named "VAEffects.dat", but that'll only be present if you've created and saved at least one text-to-speech effect.
What are the contents of the folder you're seeing?
When you mention VoiceAttack crashes when you try to edit a profile, does VoiceAttack close, or does the main window remain visible but stop responding to input?
If the latter is the case, it may be that the window to edit or create a profile is being shown, but is not within the bounds of your display(s).
You can try resetting the positions of all windows by clicking the "Reset Screens" button on the "System / Advanced" tab of the VoiceAttack options window