I'm having a bit of trouble accessing the underground in (my downloaded version of) Pokemon Platinum. I can only access it about half the time. When it doesn't work, I get up to the point where it ask you to save, the player jumps into a hole...and then both screens turn black. Have any patches/codes/work arounds been produced to fix this?

 

Oops...
DS: NDS Lite
Card: DSTWO with EOS v1.03
Clean rom, (U)

 

Nope, no cheats are on.

Edit: well I did use PokeSav. Did that corrupt my file?

 

The PokeSav changes I made were the following:
All ribbions, max stats (iv, dv, happiness, etc.)
Changed ID n Secret ID to 02010
Gave all my team Lucky Eggs to carry
Pokerus on Party

I ended up restarting the game (new save file completely) to see if anything would happen again and the problem is still there. (The only tools/cheats) I used this time were the 100% catch rate and save states on the DSTWO