We overlooked you here. In the future, please post in the Strategy/Hints Discussion forum.
The following applies only if you're playing the pc version.
1) Make sure you have the update 1.2 installed. If not, go get it at ftp://ftp.lucasarts.com/patches/pc/J3DUpdate1.2.exe
- you'll get an EXE file which you simply double-click, it installs itself.
2) Get a start_11_PUDOVKIN savegame, for example from my ftp server at ftp://ftp.soulianis.com/archive/indy/start/
(if you have WinZip then download the .zip variant).
This should enable you to continue the game.