The Witcher.com just went offline. Had downloaded rest of the game just before and started to install the EE version. In the middle of installing it said pack0.dzip is corrupt. I'm not sure if they are the same files as the new GOG version though. :O

yeah - same story here - i clicked ignore i wonder if it will work :O

Okay, the whole launcher went crazy after the failed installation of the patch. Guess I have to download the whole game again.

Same exact thing, the thing is after hitting abort (as it simply wouldn't apply) it destroyed my entire install of the game. It stated it was rolling back BUT afterwards the launcher for the game would no longer work and when i bypassed it i could only access arena and nothing else.

Now i have to download the entire game again which isn't great as i just downloaded the 10gb update - not happy about this at all as it seem the patch is messed up so i have to download a total of 26gb!!!.

Same here, not a big deal (40mbps, I'll just download the whole EE), but may be painful for slower connection.

so what i do if i have physical box version version? should i reinstall and apply all the patches again? what if it wont work again :( I think we should wait for cdp response about this..

I'm getting the same issue as well, I really don't wanna download 10GB again.

Getting a source file is corrupted error as well.

C:\PROGRAM FILES (X86)\GOG.com\TheWitcher2\CookedPC\pack0.dzip

Same issue here too.

Same problem... well, fuck.

Same issue here. There is reports of a a ton of people having this issue over at Neogaf right now as well. Can anyone from CD Projekt please respond?????????????

If you can I'd guess you should just download the whole EE version of the game from GOG.com. Maybe the patcher is broken, but the new version is fine.

With my 4mbps it will take until morning though...

Yeah, probably wait for official announcement or download EE from GoG (16GB, pain in ass)

I have the same corrupted pack0.dzip error too while trying to install the EE patch but I just chose Ignore since that file was already in my game directory (I'm hoping it is the same file from an earlier patch since this EE one supposedly includes all the DLC, tweaks and content from the previous patches). Fingers crossed.

Don't panic too much. pack0.dzip is corrupted for some people, why? Who the hell knows?

Anyway, I've done some digging and pack0.dzip appears to be in TW2EE_Patch-1.bin, what does that mean? You do not have to redownload the whole game!

Do not let the installer continue after pack0.dzip, click ABORT to roll back the changes, now delete TW2EE_Patch-1.bin, run the launcher and redownload the patch. Keep doing it until dzip works. If you do not abort at the dzip stage you will have to reinstall The Witcher 2 entirely.

If you're on a slow connection, you're gonna have to wait for an official solution.