Diablo II won't connect

Hi everybody!

This morning I've had some issues with my diablo 2. It worked very well until now.
So, as usual, I'm opening D2 loader on my desktop, window mode. It starts the game. I click on Batlle.net, it proceeds theough all the steps (accesing your account etc) , except the Checking Version step. It stucks here and shows "we got a big error here".
I reinstalled the game, I ran the game from the original executable, but when it comes to the same step, it exits and an error message appears :Unhandled Exception: Access Violation {c000005}. It's curious, cause when I start Sting's maphack, the error "we got a big error here" appears as soon as i enter diablo, no need to click on battle.net.
I repeat, yesterday evening it worked smooth...today I woke up with this in front.
What could be? What should I do?

Thanks in advance!

 

Before proceeding as below, make a backup copy of your config files, if you did any self-tweaking (d2hackmap.cfg and .vcb). This is not to repeat the work you've done, if any.
Make sure you have installed patch 1.13c, not 1.13d. Try downloading maphack, d2loader and realm patch from the sticky thread in this forum section, then check "Run as administrator" and "Run i ncompatibility mode" for XP SP2, if running under Win7 / 8. Then run d2loader like you did before, should be working.
Smells like a loader issue. You can double-check that by running Diablo2.exe, non-windowed.

 

All The files, update, loader, bn gateway are downloaded from this forum section. The patch is 1.13c I'm sure, cause also it's downloaded from here.Also it worked last night without problems, It would have been imoissible to self update. I tryed to run in compatibility mode, and I've tryed running the diablo2.exe in full screen, and when I join battle.net it gives me :"Unhandled Exception: Access Violation {c000005}". After I've uninstalled the game, I did a system restore to a 19-03-2014 point, and the same answer. Also, before reinstalling game, the d2lod.exe showed me an error before starting, something about windows compatibility issues. What could have been over night, that even a system restore can't correct...

 

This is just in case you skipped this step: Index of /pub/diablo2exp/patches/PC, for official 1.13c patch, which you should install after installing the game, and only after this step you should copy (with replace) the realm patch.