Import paths

[Halvandir]

Hey guys, I have a problem with importing blp-files. I accidently clicked on "open with..." once, now my cpu has set a different path to open blp-files. They do not work this way if I import them into the editor. I want to set the path to open these files to the default one but dunno how it normally gets opened with. How do I set the blp files back to how .mdx files are dealt with?

Can someone help me?? I'm a huge fan of custom models and can't really use them anymore it sucks

Screenshots:

 

[Flux]

It should still work even though you changed the default program for opening blp files. Perhaps something else caused this issue?
Also for viewing blp files, I highly recommend BLP Lab here in hive (Tools Section).