help PKHeX not working anymore?

[Lucien413]

I've been using PKHeX for the past few days, and I tried to boot up the application earlier today, and it didn't work. As some addition to this, it didn't even bring up the small rectangular window that normally appears once the file is executed.

I have the most recent NET Framework, and I have the most recent version of PKHeX. I'm trying to fix it, but am unsure as of what to do.

Are there any fixes to this?

EDIT: I forgot to mention that I have tried to run this as an administrator and I have also tried it with the Windows XP Compatibility Pack. (I run Windows 7.)

EDIT 2: System restored to a previous point (which would be 2 days ago), have tried restarting computer as well; No results.

Edited January 28, 2015 by Lucien413
Clarification

[Kaisonic]

What do you mean by "it didn't work"? You double-click the application and nothing happens? If you have Task Manager open in the Processes tab, does PkHex appear for a moment when you try to open it and then disappear?

[Lucien413]

That is exactly what happens to me, yes.

[Lucien413]

I've been working around on my computer for the past days in order to try to open the program and it still isn't opening - does anyone know how to fix this?